http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsProcessorValidationSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsProcessorValidationSelfTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsProcessorValidationSelfTest.java
index 3b8515a..0a23357 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsProcessorValidationSelfTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsProcessorValidationSelfTest.java
@@ -60,10 +60,10 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
     /** Meta cache 2 name. */
     private static final String metaCache2Name = "metaCache2";
 
-    /** First GGFS config in grid #1. */
+    /** First IGFS config in grid #1. */
     private IgfsConfiguration g1GgfsCfg1 = new IgfsConfiguration();
 
-    /** Second GGFS config in grid#1. */
+    /** Second IGFS config in grid#1. */
     private IgfsConfiguration g1GgfsCfg2 = new IgfsConfiguration();
 
     /** {@inheritDoc} */
@@ -123,7 +123,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
      * @throws Exception If failed.
      */
     public void testLocalIfNoCacheIsConfigured() throws Exception {
-        checkGridStartFails(g1Cfg, "Data cache is not configured locally for 
GGFS", true);
+        checkGridStartFails(g1Cfg, "Data cache is not configured locally for 
IGFS", true);
     }
 
     /**
@@ -137,7 +137,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
 
         g1Cfg.setCacheConfiguration(cc);
 
-        checkGridStartFails(g1Cfg, "Data cache is not configured locally for 
GGFS", true);
+        checkGridStartFails(g1Cfg, "Data cache is not configured locally for 
IGFS", true);
     }
 
     /**
@@ -151,7 +151,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
 
         g1Cfg.setCacheConfiguration(cc);
 
-        checkGridStartFails(g1Cfg, "Metadata cache is not configured locally 
for GGFS", true);
+        checkGridStartFails(g1Cfg, "Metadata cache is not configured locally 
for IGFS", true);
     }
 
     /**
@@ -163,7 +163,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
         for (CacheConfiguration cc : g1Cfg.getCacheConfiguration())
             cc.setAffinityMapper(new GridCacheDefaultAffinityKeyMapper());
 
-        checkGridStartFails(g1Cfg, "Invalid GGFS data cache configuration (key 
affinity mapper class should be", true);
+        checkGridStartFails(g1Cfg, "Invalid IGFS data cache configuration (key 
affinity mapper class should be", true);
     }
 
     /**
@@ -177,7 +177,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
         g1GgfsCfg1.setName(ggfsCfgName);
         g1GgfsCfg2.setName(ggfsCfgName);
 
-        checkGridStartFails(g1Cfg, "Duplicate GGFS name found (check 
configuration and assign unique name", true);
+        checkGridStartFails(g1Cfg, "Duplicate IGFS name found (check 
configuration and assign unique name", true);
     }
 
     /**
@@ -190,7 +190,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
 
         g1Cfg.setCacheConfiguration(concat(dataCaches, metaCaches(), 
CacheConfiguration.class));
 
-        checkGridStartFails(g1Cfg, "GGFS data cache cannot start with enabled 
query indexing", true);
+        checkGridStartFails(g1Cfg, "IGFS data cache cannot start with enabled 
query indexing", true);
     }
 
     /**
@@ -203,7 +203,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
 
         g1Cfg.setCacheConfiguration(concat(dataCaches(1024), metaCaches, 
CacheConfiguration.class));
 
-        checkGridStartFails(g1Cfg, "GGFS metadata cache cannot start with 
enabled query indexing", true);
+        checkGridStartFails(g1Cfg, "IGFS metadata cache cannot start with 
enabled query indexing", true);
     }
 
     /**
@@ -226,7 +226,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
 
         g1GgfsCfg2.setMaxSpaceSize(999999999999999999L);
 
-        checkGridStartFails(g1Cfg, "Maximum GGFS space size cannot be greater 
that size of available heap", true);
+        checkGridStartFails(g1Cfg, "Maximum IGFS space size cannot be greater 
that size of available heap", true);
     }
 
     /**
@@ -241,7 +241,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
         g1GgfsCfg2.setMaxSpaceSize(999999999999999999L);
 
         checkGridStartFails(g1Cfg,
-            "Maximum GGFS space size cannot be greater than size of available 
heap memory and offheap storage", true);
+            "Maximum IGFS space size cannot be greater than size of available 
heap memory and offheap storage", true);
     }
 
     /**
@@ -255,7 +255,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
             cc.setBackups(1);
         }
 
-        checkGridStartFails(g1Cfg, "GGFS data cache cannot be used with 
backups", true);
+        checkGridStartFails(g1Cfg, "IGFS data cache cannot be used with 
backups", true);
     }
 
     /**
@@ -286,7 +286,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
 
         G.start(g1Cfg);
 
-        checkGridStartFails(g2Cfg, "Data block size should be the same on all 
nodes in grid for GGFS", false);
+        checkGridStartFails(g2Cfg, "Data block size should be the same on all 
nodes in grid for IGFS", false);
     }
 
     /**
@@ -300,7 +300,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
 
         G.start(g1Cfg);
 
-        checkGridStartFails(g2Cfg, "Affinity mapper group size should be the 
same on all nodes in grid for GGFS",
+        checkGridStartFails(g2Cfg, "Affinity mapper group size should be the 
same on all nodes in grid for IGFS",
             false);
     }
 
@@ -324,7 +324,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
 
         G.start(g1Cfg);
 
-        checkGridStartFails(g2Cfg, "Meta cache name should be the same on all 
nodes in grid for GGFS", false);
+        checkGridStartFails(g2Cfg, "Meta cache name should be the same on all 
nodes in grid for IGFS", false);
     }
 
     /**
@@ -350,7 +350,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
 
         G.start(g1Cfg);
 
-        checkGridStartFails(g2Cfg, "Meta cache names should be different for 
different GGFS instances", false);
+        checkGridStartFails(g2Cfg, "Meta cache names should be different for 
different IGFS instances", false);
     }
 
     /**
@@ -373,7 +373,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
 
         G.start(g1Cfg);
 
-        checkGridStartFails(g2Cfg, "Data cache name should be the same on all 
nodes in grid for GGFS", false);
+        checkGridStartFails(g2Cfg, "Data cache name should be the same on all 
nodes in grid for IGFS", false);
     }
 
     /**
@@ -399,7 +399,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
 
         G.start(g1Cfg);
 
-        checkGridStartFails(g2Cfg, "Data cache names should be different for 
different GGFS instances", false);
+        checkGridStartFails(g2Cfg, "Data cache names should be different for 
different IGFS instances", false);
     }
 
     /**
@@ -424,7 +424,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
 
         G.start(g1Cfg);
 
-        checkGridStartFails(g2Cfg, "Default mode should be the same on all 
nodes in grid for GGFS", false);
+        checkGridStartFails(g2Cfg, "Default mode should be the same on all 
nodes in grid for IGFS", false);
     }
 
     /**
@@ -446,7 +446,7 @@ public class IgfsProcessorValidationSelfTest extends 
IgfsCommonAbstractTest {
 
         G.start(g1Cfg);
 
-        checkGridStartFails(g2Cfg, "Path modes should be the same on all nodes 
in grid for GGFS", false);
+        checkGridStartFails(g2Cfg, "Path modes should be the same on all nodes 
in grid for IGFS", false);
     }
 
     /**

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsSizeSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsSizeSelfTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsSizeSelfTest.java
index e4c104f..8ec07ab 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsSizeSelfTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsSizeSelfTest.java
@@ -71,13 +71,13 @@ public class IgfsSizeSelfTest extends 
IgfsCommonAbstractTest {
     /** Cache name. */
     private static final String META_CACHE_NAME = "metaCache";
 
-    /** GGFS name. */
+    /** IGFS name. */
     private static final String IGFS_NAME = "igfs";
 
     /** IP finder. */
     private static final TcpDiscoveryIpFinder IP_FINDER = new 
TcpDiscoveryVmIpFinder(true);
 
-    /** GGFS management port */
+    /** IGFS management port */
     private static int mgmtPort;
 
     /** Data cache mode. */
@@ -86,7 +86,7 @@ public class IgfsSizeSelfTest extends IgfsCommonAbstractTest {
     /** Whether near cache is enabled (applicable for PARTITIONED cache only). 
*/
     private boolean nearEnabled;
 
-    /** GGFS maximum space. */
+    /** IGFS maximum space. */
     private long ggfsMaxData;
 
     /** Trash purge timeout. */
@@ -274,7 +274,7 @@ public class IgfsSizeSelfTest extends 
IgfsCommonAbstractTest {
     }
 
     /**
-     * Ensure that GGFS size is correctly updated in case of preloading for 
PARTITIONED cache.
+     * Ensure that IGFS size is correctly updated in case of preloading for 
PARTITIONED cache.
      *
      * @throws Exception If failed.
      */
@@ -286,7 +286,7 @@ public class IgfsSizeSelfTest extends 
IgfsCommonAbstractTest {
     }
 
     /**
-     * Ensure that GGFS size is correctly updated in case of preloading for 
co-located cache.
+     * Ensure that IGFS size is correctly updated in case of preloading for 
co-located cache.
      *
      * @throws Exception If failed.
      */
@@ -298,14 +298,14 @@ public class IgfsSizeSelfTest extends 
IgfsCommonAbstractTest {
     }
 
     /**
-     * Ensure that GGFS cache size is calculated correctly.
+     * Ensure that IGFS cache size is calculated correctly.
      *
      * @throws Exception If failed.
      */
     private void check() throws Exception {
         startUp();
 
-        // Ensure that cache was marked as GGFS data cache.
+        // Ensure that cache was marked as IGFS data cache.
         for (int i = 0; i < GRID_CNT; i++) {
             IgniteEx g = grid(i);
 
@@ -418,7 +418,7 @@ public class IgfsSizeSelfTest extends 
IgfsCommonAbstractTest {
     }
 
     /**
-     * Ensure that an exception is thrown in case of GGFS oversize.
+     * Ensure that an exception is thrown in case of IGFS oversize.
      *
      * @throws Exception If failed.
      */
@@ -462,7 +462,7 @@ public class IgfsSizeSelfTest extends 
IgfsCommonAbstractTest {
                     U.closeQuiet(osErr);
                 }
             }
-        }, IgfsOutOfSpaceException.class, "Failed to write data block (GGFS 
maximum data size exceeded) [used=" +
+        }, IgfsOutOfSpaceException.class, "Failed to write data block (IGFS 
maximum data size exceeded) [used=" +
             ggfsMaxData + ", allowed=" + ggfsMaxData + ']');
     }
 
@@ -557,7 +557,7 @@ public class IgfsSizeSelfTest extends 
IgfsCommonAbstractTest {
     }
 
     /**
-     * Ensure that GGFS size is correctly updated in case of preloading.
+     * Ensure that IGFS size is correctly updated in case of preloading.
      *
      * @throws Exception If failed.
      */
@@ -721,7 +721,7 @@ public class IgfsSizeSelfTest extends 
IgfsCommonAbstractTest {
      * Get GGfs of a node with the given index.
      *
      * @param idx Node index.
-     * @return GGFS.
+     * @return IGFS.
      * @throws Exception If failed.
      */
     private IgfsImpl ggfs(int idx) throws Exception {
@@ -732,7 +732,7 @@ public class IgfsSizeSelfTest extends 
IgfsCommonAbstractTest {
      * Get GGfs of the given node.
      *
      * @param ignite Node;
-     * @return GGFS.
+     * @return IGFS.
      * @throws Exception If failed.
      */
     private IgfsImpl ggfs(Ignite ignite) throws Exception {

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsStreamsSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsStreamsSelfTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsStreamsSelfTest.java
index db93385..efd578e 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsStreamsSelfTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsStreamsSelfTest.java
@@ -40,7 +40,7 @@ import static org.apache.ignite.cache.CacheMode.*;
 import static org.apache.ignite.testframework.GridTestUtils.*;
 
 /**
- * Tests for GGFS streams content.
+ * Tests for IGFS streams content.
  */
 public class IgfsStreamsSelfTest extends IgfsCommonAbstractTest {
     /** Test IP finder. */
@@ -147,7 +147,7 @@ public class IgfsStreamsSelfTest extends 
IgfsCommonAbstractTest {
     }
 
     /**
-     * Test GGFS construction.
+     * Test IGFS construction.
      *
      * @throws IgniteCheckedException In case of exception.
      */

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsTaskSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsTaskSelfTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsTaskSelfTest.java
index 7c3a8ef..4d441ed 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsTaskSelfTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/IgfsTaskSelfTest.java
@@ -67,7 +67,7 @@ public class IgfsTaskSelfTest extends IgfsCommonAbstractTest {
     /** Repeat count. */
     private static final int REPEAT_CNT = 10;
 
-    /** GGFS. */
+    /** IGFS. */
     private static IgniteFs ggfs;
 
     /** {@inheritDoc} */

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/split/IgfsAbstractRecordResolverSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/split/IgfsAbstractRecordResolverSelfTest.java
 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/split/IgfsAbstractRecordResolverSelfTest.java
index c21cfe7..05de61a 100644
--- 
a/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/split/IgfsAbstractRecordResolverSelfTest.java
+++ 
b/modules/core/src/test/java/org/apache/ignite/internal/processors/igfs/split/IgfsAbstractRecordResolverSelfTest.java
@@ -45,7 +45,7 @@ public class IgfsAbstractRecordResolverSelfTest extends 
GridCommonAbstractTest {
     /** Shared IP finder. */
     private final TcpDiscoveryIpFinder ipFinder = new 
TcpDiscoveryVmIpFinder(true);
 
-    /** GGFS. */
+    /** IGFS. */
     protected static IgniteFs igfs;
 
     /** {@inheritDoc} */

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/readme.txt
----------------------------------------------------------------------
diff --git a/modules/hadoop/readme.txt b/modules/hadoop/readme.txt
index 37b7a65..ecd47e0 100644
--- a/modules/hadoop/readme.txt
+++ b/modules/hadoop/readme.txt
@@ -1,7 +1,7 @@
 Apache Ignite Hadoop Module
 ---------------------------
 
-Apache Ignite Hadoop module provides In-Memory MapReduce engine and driver to 
use GGFS as Hadoop file system
+Apache Ignite Hadoop module provides In-Memory MapReduce engine and driver to 
use IGFS as Hadoop file system
 which are 100% compatible with HDFS and YARN.
 
 To enable Hadoop module when starting a standalone node, move 
'optional/ignite-hadoop' folder to

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/IgfsHadoopParameters.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/IgfsHadoopParameters.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/IgfsHadoopParameters.java
index 78614ad..6237dd4 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/IgfsHadoopParameters.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/IgfsHadoopParameters.java
@@ -20,15 +20,15 @@ package org.apache.ignite.igfs.hadoop;
 /**
  * This class lists parameters that can be specified in Hadoop configuration.
  * Hadoop configuration can be specified in {@code core-site.xml} file
- * or passed to map-reduce task directly when using Hadoop driver for GGFS 
file system:
+ * or passed to map-reduce task directly when using Hadoop driver for IGFS 
file system:
  * <ul>
  *     <li>
  *         {@code fs.igfs.[name].open.sequential_reads_before_prefetch} - this 
parameter overrides
  *         the one specified in {@link 
org.apache.ignite.configuration.IgfsConfiguration#getSequentialReadsBeforePrefetch()}
- *         GGFS data node configuration property.
+ *         IGFS data node configuration property.
  *     </li>
  *     <li>
- *         {@code fs.igfs.[name].log.enabled} - specifies whether GGFS 
sampling logger is enabled. If
+ *         {@code fs.igfs.[name].log.enabled} - specifies whether IGFS 
sampling logger is enabled. If
  *         {@code true}, then all file system operations will be logged to a 
file.
  *     </li>
  *     <li>{@code fs.igfs.[name].log.dir} - specifies log directory where 
sampling log files should be placed.</li>
@@ -70,7 +70,7 @@ package org.apache.ignite.igfs.hadoop;
  * hadoop jar myjarfile.jar MyMapReduceJob 
-Dfs.igfs.open.sequential_reads_before_prefetch=4
  * </pre>
  * If you want to use these parameters in code, then you have to substitute 
you file system name in it. The easiest
- * way to do that is {@code String.format(PARAM_GGFS_COLOCATED_WRITES, 
[name])}.
+ * way to do that is {@code String.format(PARAM_IGFS_COLOCATED_WRITES, 
[name])}.
  */
 public class IgfsHadoopParameters {
     /** Parameter name for control over file colocation write mode. */

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/v1/IgfsHadoopFileSystem.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/v1/IgfsHadoopFileSystem.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/v1/IgfsHadoopFileSystem.java
index 7e94ca2..42f5c5f 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/v1/IgfsHadoopFileSystem.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/v1/IgfsHadoopFileSystem.java
@@ -45,8 +45,8 @@ import static 
org.apache.ignite.igfs.hadoop.IgfsHadoopParameters.*;
 import static org.apache.ignite.internal.igfs.hadoop.IgfsHadoopUtils.*;
 
 /**
- * {@code GGFS} Hadoop 1.x file system driver over file system API. To use
- * {@code GGFS} as Hadoop file system, you should configure this class
+ * {@code IGFS} Hadoop 1.x file system driver over file system API. To use
+ * {@code IGFS} as Hadoop file system, you should configure this class
  * in Hadoop's {@code core-site.xml} as follows:
  * <pre name="code" class="xml">
  *  &lt;property&gt;
@@ -128,7 +128,7 @@ public class IgfsHadoopFileSystem extends FileSystem {
     /** Secondary URI string. */
     private URI secondaryUri;
 
-    /** GGFS mode resolver. */
+    /** IGFS mode resolver. */
     private IgfsModeResolver modeRslvr;
 
     /** Secondary file system instance. */
@@ -140,7 +140,7 @@ public class IgfsHadoopFileSystem extends FileSystem {
     /** Whether custom sequential reads before prefetch value is provided. */
     private boolean seqReadsBeforePrefetchOverride;
 
-    /** GGFS group block size. */
+    /** IGFS group block size. */
     private long ggfsGrpBlockSize;
 
     /** Flag that controls whether file writes should be colocated. */
@@ -722,7 +722,7 @@ public class IgfsHadoopFileSystem extends FileSystem {
             }
         }
         catch (IOException e) {
-            // Intentionally ignore GGFS exceptions here to follow Hadoop 
contract.
+            // Intentionally ignore IGFS exceptions here to follow Hadoop 
contract.
             if (F.eq(IOException.class, e.getClass()) && (e.getCause() == null 
||
                 !X.hasCause(e.getCause(), IgfsException.class)))
                 throw e;
@@ -773,7 +773,7 @@ public class IgfsHadoopFileSystem extends FileSystem {
             }
         }
         catch (IOException e) {
-            // Intentionally ignore GGFS exceptions here to follow Hadoop 
contract.
+            // Intentionally ignore IGFS exceptions here to follow Hadoop 
contract.
             if (F.eq(IOException.class, e.getClass()) && (e.getCause() == null 
||
                 !X.hasCause(e.getCause(), IgfsException.class)))
                 throw e;
@@ -931,7 +931,7 @@ public class IgfsHadoopFileSystem extends FileSystem {
             }
         }
         catch (IOException e) {
-            // Intentionally ignore GGFS exceptions here to follow Hadoop 
contract.
+            // Intentionally ignore IGFS exceptions here to follow Hadoop 
contract.
             if (F.eq(IOException.class, e.getClass()) && (e.getCause() == null 
||
                 !X.hasCause(e.getCause(), IgfsException.class)))
                 throw e;
@@ -1066,7 +1066,7 @@ public class IgfsHadoopFileSystem extends FileSystem {
     /**
      * Resolve path mode.
      *
-     * @param path GGFS path.
+     * @param path IGFS path.
      * @return Path mode.
      */
     public IgfsMode mode(IgfsPath path) {
@@ -1136,9 +1136,9 @@ public class IgfsHadoopFileSystem extends FileSystem {
     }
 
     /**
-     * Convert GGFS path into Hadoop path.
+     * Convert IGFS path into Hadoop path.
      *
-     * @param path GGFS path.
+     * @param path IGFS path.
      * @return Hadoop path.
      */
     private Path convert(IgfsPath path) {
@@ -1146,10 +1146,10 @@ public class IgfsHadoopFileSystem extends FileSystem {
     }
 
     /**
-     * Convert Hadoop path into GGFS path.
+     * Convert Hadoop path into IGFS path.
      *
      * @param path Hadoop path.
-     * @return GGFS path.
+     * @return IGFS path.
      */
     @Nullable private IgfsPath convert(@Nullable Path path) {
         if (path == null)
@@ -1160,9 +1160,9 @@ public class IgfsHadoopFileSystem extends FileSystem {
     }
 
     /**
-     * Convert GGFS affinity block location into Hadoop affinity block 
location.
+     * Convert IGFS affinity block location into Hadoop affinity block 
location.
      *
-     * @param block GGFS affinity block location.
+     * @param block IGFS affinity block location.
      * @return Hadoop affinity block location.
      */
     private BlockLocation convert(IgfsBlockLocation block) {
@@ -1187,9 +1187,9 @@ public class IgfsHadoopFileSystem extends FileSystem {
     }
 
     /**
-     * Convert GGFS file information into Hadoop file status.
+     * Convert IGFS file information into Hadoop file status.
      *
-     * @param file GGFS file information.
+     * @param file IGFS file information.
      * @return Hadoop file status.
      */
     @SuppressWarnings("deprecation")
@@ -1206,10 +1206,10 @@ public class IgfsHadoopFileSystem extends FileSystem {
     }
 
     /**
-     * Convert Hadoop permission into GGFS file attribute.
+     * Convert Hadoop permission into IGFS file attribute.
      *
      * @param perm Hadoop permission.
-     * @return GGFS attributes.
+     * @return IGFS attributes.
      */
     private Map<String, String> permission(FsPermission perm) {
         if (perm == null)
@@ -1227,7 +1227,7 @@ public class IgfsHadoopFileSystem extends FileSystem {
     }
 
     /**
-     * Convert GGFS file attributes into Hadoop permission.
+     * Convert IGFS file attributes into Hadoop permission.
      *
      * @param file File info.
      * @return Hadoop permission.

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/v2/IgfsHadoopFileSystem.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/v2/IgfsHadoopFileSystem.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/v2/IgfsHadoopFileSystem.java
index 713fc94..856505b 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/v2/IgfsHadoopFileSystem.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/igfs/hadoop/v2/IgfsHadoopFileSystem.java
@@ -45,8 +45,8 @@ import static 
org.apache.ignite.igfs.hadoop.IgfsHadoopParameters.*;
 import static org.apache.ignite.internal.igfs.hadoop.IgfsHadoopUtils.*;
 
 /**
- * {@code GGFS} Hadoop 2.x file system driver over file system API. To use
- * {@code GGFS} as Hadoop file system, you should configure this class
+ * {@code IGFS} Hadoop 2.x file system driver over file system API. To use
+ * {@code IGFS} as Hadoop file system, you should configure this class
  * in Hadoop's {@code core-site.xml} as follows:
  * <pre name="code" class="xml">
  *  &lt;property&gt;
@@ -885,9 +885,9 @@ public class IgfsHadoopFileSystem extends 
AbstractFileSystem implements Closeabl
     }
 
     /**
-     * Convert GGFS path into Hadoop path.
+     * Convert IGFS path into Hadoop path.
      *
-     * @param path GGFS path.
+     * @param path IGFS path.
      * @return Hadoop path.
      */
     private Path convert(IgfsPath path) {
@@ -895,10 +895,10 @@ public class IgfsHadoopFileSystem extends 
AbstractFileSystem implements Closeabl
     }
 
     /**
-     * Convert Hadoop path into GGFS path.
+     * Convert Hadoop path into IGFS path.
      *
      * @param path Hadoop path.
-     * @return GGFS path.
+     * @return IGFS path.
      */
     @Nullable private IgfsPath convert(Path path) {
         if (path == null)
@@ -909,9 +909,9 @@ public class IgfsHadoopFileSystem extends 
AbstractFileSystem implements Closeabl
     }
 
     /**
-     * Convert GGFS affinity block location into Hadoop affinity block 
location.
+     * Convert IGFS affinity block location into Hadoop affinity block 
location.
      *
-     * @param block GGFS affinity block location.
+     * @param block IGFS affinity block location.
      * @return Hadoop affinity block location.
      */
     private BlockLocation convert(IgfsBlockLocation block) {
@@ -936,9 +936,9 @@ public class IgfsHadoopFileSystem extends 
AbstractFileSystem implements Closeabl
     }
 
     /**
-     * Convert GGFS file information into Hadoop file status.
+     * Convert IGFS file information into Hadoop file status.
      *
-     * @param file GGFS file information.
+     * @param file IGFS file information.
      * @return Hadoop file status.
      */
     private FileStatus convert(IgfsFile file) {
@@ -960,10 +960,10 @@ public class IgfsHadoopFileSystem extends 
AbstractFileSystem implements Closeabl
     }
 
     /**
-     * Convert Hadoop permission into GGFS file attribute.
+     * Convert Hadoop permission into IGFS file attribute.
      *
      * @param perm Hadoop permission.
-     * @return GGFS attributes.
+     * @return IGFS attributes.
      */
     private Map<String, String> permission(FsPermission perm) {
         if (perm == null)
@@ -981,7 +981,7 @@ public class IgfsHadoopFileSystem extends 
AbstractFileSystem implements Closeabl
     }
 
     /**
-     * Convert GGFS file attributes into Hadoop permission.
+     * Convert IGFS file attributes into Hadoop permission.
      *
      * @param file File info.
      * @return Hadoop permission.

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoop.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoop.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoop.java
index 9f17965..27d6e33 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoop.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoop.java
@@ -46,7 +46,7 @@ public interface IgfsHadoop {
     public void close(boolean force);
 
     /**
-     * Command to retrieve file info for some GGFS path.
+     * Command to retrieve file info for some IGFS path.
      *
      * @param path Path to get file info for.
      * @return Future for info operation.
@@ -57,7 +57,7 @@ public interface IgfsHadoop {
     /**
      * Command to update file properties.
      *
-     * @param path GGFS path to update properties.
+     * @param path IGFS path to update properties.
      * @param props Properties to update.
      * @return Future for update operation.
      * @throws IgniteCheckedException If failed.

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopCommunicationException.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopCommunicationException.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopCommunicationException.java
index f892fb1..03bf733 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopCommunicationException.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopCommunicationException.java
@@ -20,7 +20,7 @@ package org.apache.ignite.internal.igfs.hadoop;
 import org.apache.ignite.*;
 
 /**
- * Communication exception indicating a problem between file system and GGFS 
instance.
+ * Communication exception indicating a problem between file system and IGFS 
instance.
  */
 public class IgfsHadoopCommunicationException extends IgniteCheckedException {
     /** */

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopEndpoint.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopEndpoint.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopEndpoint.java
index 5117ab3..2855c10 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopEndpoint.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopEndpoint.java
@@ -29,13 +29,13 @@ import java.net.*;
 import static org.apache.ignite.configuration.IgfsConfiguration.*;
 
 /**
- * GGFS endpoint abstraction.
+ * IGFS endpoint abstraction.
  */
 public class IgfsHadoopEndpoint {
     /** Localhost. */
     public static final String LOCALHOST = "127.0.0.1";
 
-    /** GGFS name. */
+    /** IGFS name. */
     private final String ggfsName;
 
     /** Grid name. */
@@ -48,7 +48,7 @@ public class IgfsHadoopEndpoint {
     private final int port;
 
     /**
-     * Normalize GGFS URI.
+     * Normalize IGFS URI.
      *
      * @param uri URI.
      * @return Normalized URI.
@@ -57,7 +57,7 @@ public class IgfsHadoopEndpoint {
     public static URI normalize(URI uri) throws IOException {
         try {
             if (!F.eq(IgniteFs.IGFS_SCHEME, uri.getScheme()))
-                throw new IOException("Failed to normalize UIR because it has 
non GGFS scheme: " + uri);
+                throw new IOException("Failed to normalize UIR because it has 
non IGFS scheme: " + uri);
 
             IgfsHadoopEndpoint endpoint = new 
IgfsHadoopEndpoint(uri.getAuthority());
 
@@ -169,7 +169,7 @@ public class IgfsHadoopEndpoint {
     }
 
     /**
-     * @return GGFS name.
+     * @return IGFS name.
      */
     @Nullable public String ggfs() {
         return ggfsName;

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopEx.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopEx.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopEx.java
index aa9de45..da86e37 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopEx.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopEx.java
@@ -23,7 +23,7 @@ import org.jetbrains.annotations.*;
 import java.io.*;
 
 /**
- * Extended GGFS server interface.
+ * Extended IGFS server interface.
  */
 public interface IgfsHadoopEx extends IgfsHadoop {
     /**

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopFileSystemWrapper.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopFileSystemWrapper.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopFileSystemWrapper.java
index d67ee83..eb41de0 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopFileSystemWrapper.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopFileSystemWrapper.java
@@ -79,9 +79,9 @@ public class IgfsHadoopFileSystemWrapper implements Igfs, 
AutoCloseable {
     }
 
     /**
-     * Convert GGFS path into Hadoop path.
+     * Convert IGFS path into Hadoop path.
      *
-     * @param path GGFS path.
+     * @param path IGFS path.
      * @return Hadoop path.
      */
     private Path convert(IgfsPath path) {
@@ -111,10 +111,10 @@ public class IgfsHadoopFileSystemWrapper implements Igfs, 
AutoCloseable {
     }
 
     /**
-     * Cast IO exception to GGFS exception.
+     * Cast IO exception to IGFS exception.
      *
      * @param e IO exception.
-     * @return GGFS exception.
+     * @return IGFS exception.
      */
     public static IgfsException cast(String msg, IOException e) {
         if (e instanceof FileNotFoundException)
@@ -133,7 +133,7 @@ public class IgfsHadoopFileSystemWrapper implements Igfs, 
AutoCloseable {
      * Convert Hadoop FileStatus properties to map.
      *
      * @param status File status.
-     * @return GGFS attributes.
+     * @return IGFS attributes.
      */
     private static Map<String, String> properties(FileStatus status) {
         FsPermission perm = status.getPermission();

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopFuture.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopFuture.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopFuture.java
index 3d4bda8..476641c 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopFuture.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopFuture.java
@@ -21,7 +21,7 @@ import org.apache.ignite.internal.util.lang.*;
 import org.jetbrains.annotations.*;
 
 /**
- * GGFS client future that holds response parse closure.
+ * IGFS client future that holds response parse closure.
  */
 public class IgfsHadoopFuture<T> extends GridPlainFutureAdapter<T> {
     /** Output buffer. */

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopInProc.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopInProc.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopInProc.java
index a2c168f..5c5a61e 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopInProc.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopInProc.java
@@ -32,7 +32,7 @@ import java.util.concurrent.*;
  * Communication with grid in the same process.
  */
 public class IgfsHadoopInProc implements IgfsHadoopEx {
-    /** Target GGFS. */
+    /** Target IGFS. */
     private final IgfsEx ggfs;
 
     /** Buffer size. */
@@ -48,7 +48,7 @@ public class IgfsHadoopInProc implements IgfsHadoopEx {
     /**
      * Constructor.
      *
-     * @param ggfs Target GGFS.
+     * @param ggfs Target IGFS.
      * @param log Log.
      */
     public IgfsHadoopInProc(IgfsEx ggfs, Log log) {
@@ -350,7 +350,7 @@ public class IgfsHadoopInProc implements IgfsHadoopEx {
                 lsnr.onError(e.getMessage());
 
             if (e instanceof IllegalStateException)
-                throw new IOException("Failed to write data to GGFS stream 
because Grid is stopping.", e);
+                throw new IOException("Failed to write data to IGFS stream 
because Grid is stopping.", e);
             else
                 throw e;
         }
@@ -370,7 +370,7 @@ public class IgfsHadoopInProc implements IgfsHadoopEx {
                 lsnr.onError(e.getMessage());
 
             if (e instanceof IllegalStateException)
-                throw new IOException("Failed to flush data to GGFS stream 
because Grid is stopping.", e);
+                throw new IOException("Failed to flush data to IGFS stream 
because Grid is stopping.", e);
             else
                 throw e;
         }
@@ -384,7 +384,7 @@ public class IgfsHadoopInProc implements IgfsHadoopEx {
             closeable.close();
         }
         catch (IllegalStateException e) {
-            throw new IOException("Failed to close GGFS stream because Grid is 
stopping.", e);
+            throw new IOException("Failed to close IGFS stream because Grid is 
stopping.", e);
         }
     }
 

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopInputStream.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopInputStream.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopInputStream.java
index 3a369ef..efc5264 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopInputStream.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopInputStream.java
@@ -28,7 +28,7 @@ import org.jetbrains.annotations.*;
 import java.io.*;
 
 /**
- * GGFS input stream wrapper for hadoop interfaces.
+ * IGFS input stream wrapper for hadoop interfaces.
  */
 @SuppressWarnings("FieldAccessedSynchronizedAndUnsynchronized")
 public final class IgfsHadoopInputStream extends InputStream implements 
Seekable, PositionedReadable,

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopIo.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopIo.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopIo.java
index 7f87e10..46f5a6c 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopIo.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopIo.java
@@ -23,12 +23,12 @@ import org.apache.ignite.internal.util.lang.*;
 import org.jetbrains.annotations.*;
 
 /**
- * IO abstraction layer for GGFS client. Two kind of messages are expected to 
be sent: requests with response
+ * IO abstraction layer for IGFS client. Two kind of messages are expected to 
be sent: requests with response
  * and request without response.
  */
 public interface IgfsHadoopIo {
     /**
-     * Sends given GGFS client message and asynchronously awaits for response.
+     * Sends given IGFS client message and asynchronously awaits for response.
      *
      * @param msg Message to send.
      * @return Future that will be completed.
@@ -37,7 +37,7 @@ public interface IgfsHadoopIo {
     public GridPlainFuture<IgfsMessage> send(IgfsMessage msg) throws 
IgniteCheckedException;
 
     /**
-     * Sends given GGFS client message and asynchronously awaits for response. 
When IO detects response
+     * Sends given IGFS client message and asynchronously awaits for response. 
When IO detects response
      * beginning for given message it stops reading data and passes input 
stream to closure which can read
      * response in a specific way.
      *

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopIpcIo.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopIpcIo.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopIpcIo.java
index 5e2d03b..d07f34d 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopIpcIo.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopIpcIo.java
@@ -348,7 +348,7 @@ public class IgfsHadoopIpcIo implements IgfsHadoopIo {
             assert oldFut == null;
 
             if (log.isDebugEnabled())
-                log.debug("Sending GGFS message [reqId=" + reqId + ", msg=" + 
msg + ']');
+                log.debug("Sending IGFS message [reqId=" + reqId + ", msg=" + 
msg + ']');
 
             byte[] hdr = IgfsMarshaller.createHeader(reqId, msg.command());
 
@@ -516,7 +516,7 @@ public class IgfsHadoopIpcIo implements IgfsHadoopIo {
                                 IgfsIpcCommand cmd = 
IgfsIpcCommand.valueOf(U.bytesToInt(hdr, 8));
 
                                 if (log.isDebugEnabled())
-                                    log.debug("Received GGFS response [reqId=" 
+ reqId + ", cmd=" + cmd + ']');
+                                    log.debug("Received IGFS response [reqId=" 
+ reqId + ", cmd=" + cmd + ']');
 
                                 Object res = null;
 

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopOutProc.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopOutProc.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopOutProc.java
index 0e36e78..b66bdd1 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopOutProc.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopOutProc.java
@@ -75,7 +75,7 @@ public class IgfsHadoopOutProc implements IgfsHadoopEx, 
IgfsHadoopIpcIoListener
     /** Grid name. */
     private final String grid;
 
-    /** GGFS name. */
+    /** IGFS name. */
     private final String ggfs;
 
     /** Client log. */
@@ -93,7 +93,7 @@ public class IgfsHadoopOutProc implements IgfsHadoopEx, 
IgfsHadoopIpcIoListener
      * @param host Host.
      * @param port Port.
      * @param grid Grid name.
-     * @param ggfs GGFS name.
+     * @param ggfs IGFS name.
      * @param log Client logger.
      * @throws IOException If failed.
      */
@@ -106,7 +106,7 @@ public class IgfsHadoopOutProc implements IgfsHadoopEx, 
IgfsHadoopIpcIoListener
      *
      * @param port Port.
      * @param grid Grid name.
-     * @param ggfs GGFS name.
+     * @param ggfs IGFS name.
      * @param log Client logger.
      * @throws IOException If failed.
      */
@@ -120,7 +120,7 @@ public class IgfsHadoopOutProc implements IgfsHadoopEx, 
IgfsHadoopIpcIoListener
      * @param host Host.
      * @param port Port.
      * @param grid Grid name.
-     * @param ggfs GGFS name.
+     * @param ggfs IGFS name.
      * @param shmem Shared memory flag.
      * @param log Client logger.
      * @throws IOException If failed.

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopOutputStream.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopOutputStream.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopOutputStream.java
index 6a5bcf1..ae5f980 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopOutputStream.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopOutputStream.java
@@ -25,7 +25,7 @@ import org.jetbrains.annotations.*;
 import java.io.*;
 
 /**
- * GGFS Hadoop output stream implementation.
+ * IGFS Hadoop output stream implementation.
  */
 public class IgfsHadoopOutputStream extends OutputStream implements 
IgfsHadoopStreamEventListener {
     /** Log instance. */

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopStreamDelegate.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopStreamDelegate.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopStreamDelegate.java
index fdf5a0a..9aaab4c 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopStreamDelegate.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopStreamDelegate.java
@@ -20,7 +20,7 @@ package org.apache.ignite.internal.igfs.hadoop;
 import org.apache.ignite.internal.util.typedef.internal.*;
 
 /**
- * GGFS Hadoop stream descriptor.
+ * IGFS Hadoop stream descriptor.
  */
 public class IgfsHadoopStreamDelegate {
     /** RPC handler. */

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopStreamEventListener.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopStreamEventListener.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopStreamEventListener.java
index 4137685..20d7f2a 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopStreamEventListener.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopStreamEventListener.java
@@ -20,7 +20,7 @@ package org.apache.ignite.internal.igfs.hadoop;
 import org.apache.ignite.*;
 
 /**
- * GGFS input stream event listener.
+ * IGFS input stream event listener.
  */
 public interface IgfsHadoopStreamEventListener {
     /**

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopUtils.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopUtils.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopUtils.java
index 58549ef..f8bf1ae 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopUtils.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopUtils.java
@@ -27,7 +27,7 @@ import org.jetbrains.annotations.*;
 import java.io.*;
 
 /**
- * Utility constants and methods for GGFS Hadoop file system.
+ * Utility constants and methods for IGFS Hadoop file system.
  */
 public class IgfsHadoopUtils {
     /** Parameter name for endpoint no embed mode flag. */

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopWrapper.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopWrapper.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopWrapper.java
index b9f28e1..8ba369a 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopWrapper.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/IgfsHadoopWrapper.java
@@ -34,7 +34,7 @@ import static 
org.apache.ignite.internal.igfs.hadoop.IgfsHadoopEndpoint.*;
 import static org.apache.ignite.internal.igfs.hadoop.IgfsHadoopUtils.*;
 
 /**
- * Wrapper for GGFS server.
+ * Wrapper for IGFS server.
  */
 public class IgfsHadoopWrapper implements IgfsHadoop {
     /** Delegate. */
@@ -314,7 +314,7 @@ public class IgfsHadoopWrapper implements IgfsHadoop {
             }
         }
 
-        throw new IOException("Failed to communicate with GGFS.", err);
+        throw new IOException("Failed to communicate with IGFS.", err);
     }
 
     /**
@@ -371,7 +371,7 @@ public class IgfsHadoopWrapper implements IgfsHadoop {
                         hadoop.close(true);
 
                     if (log.isDebugEnabled())
-                        log.debug("Failed to connect to in-proc GGFS, fallback 
to IPC mode.", e);
+                        log.debug("Failed to connect to in-proc IGFS, fallback 
to IPC mode.", e);
 
                     err = e;
                 }
@@ -393,7 +393,7 @@ public class IgfsHadoopWrapper implements IgfsHadoop {
                         hadoop.close(true);
 
                     if (log.isDebugEnabled())
-                        log.debug("Failed to connect to out-proc local GGFS 
using shmem.", e);
+                        log.debug("Failed to connect to out-proc local IGFS 
using shmem.", e);
 
                     err = e;
                 }
@@ -418,7 +418,7 @@ public class IgfsHadoopWrapper implements IgfsHadoop {
                         hadoop.close(true);
 
                     if (log.isDebugEnabled())
-                        log.debug("Failed to connect to out-proc local GGFS 
using TCP.", e);
+                        log.debug("Failed to connect to out-proc local IGFS 
using TCP.", e);
 
                     err = e;
                 }
@@ -439,7 +439,7 @@ public class IgfsHadoopWrapper implements IgfsHadoop {
                     hadoop.close(true);
 
                 if (log.isDebugEnabled())
-                    log.debug("Failed to connect to out-proc remote GGFS using 
TCP.", e);
+                    log.debug("Failed to connect to out-proc remote IGFS using 
TCP.", e);
 
                 err = e;
             }
@@ -452,7 +452,7 @@ public class IgfsHadoopWrapper implements IgfsHadoop {
             return curDelegate;
         }
         else
-            throw new IgfsHadoopCommunicationException("Failed to connect to 
GGFS: " + endpoint, err);
+            throw new IgfsHadoopCommunicationException("Failed to connect to 
IGFS: " + endpoint, err);
     }
 
     /**

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/package.html
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/package.html
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/package.html
index 4520df8..ec380f2 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/package.html
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/hadoop/package.html
@@ -19,6 +19,6 @@
 <html>
 <body>
     <!-- Package description. -->
-    Contains GGFS client classes.
+    Contains IGFS client classes.
 </body>
 </html>

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/package.html
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/package.html 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/package.html
index 4f47151..4b070d3 100644
--- a/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/package.html
+++ b/modules/hadoop/src/main/java/org/apache/ignite/internal/igfs/package.html
@@ -19,6 +19,6 @@
 <html>
 <body>
     <!-- Package description. -->
-    Contains GGFS client and common classes.
+    Contains IGFS client and common classes.
 </body>
 </html>

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/GridHadoopClassLoader.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/GridHadoopClassLoader.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/GridHadoopClassLoader.java
index 9d386b1..1f347c8 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/GridHadoopClassLoader.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/GridHadoopClassLoader.java
@@ -68,7 +68,7 @@ public class GridHadoopClassLoader extends URLClassLoader {
     }
 
     /**
-     * Need to parse only Ignite Hadoop and GGFS classes.
+     * Need to parse only Ignite Hadoop and IGFS classes.
      *
      * @param cls Class name.
      * @return {@code true} if we need to check this class.
@@ -100,7 +100,7 @@ public class GridHadoopClassLoader extends URLClassLoader {
                 return loadClassExplicitly(name, resolve);
             }
 
-            if (isGgfsOrGgHadoop(name)) { // For GG Hadoop and GGFS classes we 
have to check if they depend on Hadoop.
+            if (isGgfsOrGgHadoop(name)) { // For GG Hadoop and IGFS classes we 
have to check if they depend on Hadoop.
                 Boolean hasDeps = cache.get(name);
 
                 if (hasDeps == null) {

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/planner/GridHadoopDefaultMapReducePlanner.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/planner/GridHadoopDefaultMapReducePlanner.java
 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/planner/GridHadoopDefaultMapReducePlanner.java
index d001248..44eb404 100644
--- 
a/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/planner/GridHadoopDefaultMapReducePlanner.java
+++ 
b/modules/hadoop/src/main/java/org/apache/ignite/internal/processors/hadoop/planner/GridHadoopDefaultMapReducePlanner.java
@@ -173,10 +173,10 @@ public class GridHadoopDefaultMapReducePlanner implements 
GridHadoopMapReducePla
                     assert blocks != null;
 
                     if (blocks.size() == 1)
-                        // Fast-path, split consists of one GGFS block (as in 
most cases).
+                        // Fast-path, split consists of one IGFS block (as in 
most cases).
                         return bestNode(blocks.iterator().next().nodeIds(), 
topIds, nodeLoads, false);
                     else {
-                        // Slow-path, file consists of multiple GGFS blocks. 
First, find the most co-located nodes.
+                        // Slow-path, file consists of multiple IGFS blocks. 
First, find the most co-located nodes.
                         Map<UUID, Long> nodeMap = new HashMap<>();
 
                         List<UUID> bestNodeIds = null;
@@ -215,7 +215,7 @@ public class GridHadoopDefaultMapReducePlanner implements 
GridHadoopMapReducePla
             }
         }
 
-        // Cannot use local GGFS for some reason, try selecting the node by 
host.
+        // Cannot use local IGFS for some reason, try selecting the node by 
host.
         Collection<UUID> blockNodes = null;
 
         for (String host : split.hosts()) {

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/client/hadoop/GridHadoopClientProtocolSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/client/hadoop/GridHadoopClientProtocolSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/client/hadoop/GridHadoopClientProtocolSelfTest.java
index 7f10214..a96eb82 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/client/hadoop/GridHadoopClientProtocolSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/client/hadoop/GridHadoopClientProtocolSelfTest.java
@@ -393,9 +393,9 @@ public class GridHadoopClientProtocolSelfTest extends 
GridHadoopAbstractSelfTest
     }
 
     /**
-     * Dump GGFS content.
+     * Dump IGFS content.
      *
-     * @param ggfs GGFS.
+     * @param ggfs IGFS.
      * @param path Path.
      * @throws Exception If failed.
      */

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsEventsTestSuite.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsEventsTestSuite.java 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsEventsTestSuite.java
index 92ea777..a685091 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsEventsTestSuite.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsEventsTestSuite.java
@@ -31,7 +31,7 @@ import java.util.*;
 import static org.apache.ignite.igfs.IgfsMode.*;
 
 /**
- * Test suite for GGFS event tests.
+ * Test suite for IGFS event tests.
  */
 @SuppressWarnings("PublicInnerClass")
 public class IgfsEventsTestSuite extends TestSuite {
@@ -62,7 +62,7 @@ public class IgfsEventsTestSuite extends TestSuite {
     public static TestSuite suiteNoarchOnly() throws Exception {
         GridHadoopClassLoader ldr = new GridHadoopClassLoader(null);
 
-        TestSuite suite = new TestSuite("Ignite GGFS Events Test Suite Noarch 
Only");
+        TestSuite suite = new TestSuite("Ignite IGFS Events Test Suite Noarch 
Only");
 
         suite.addTest(new 
TestSuite(ldr.loadClass(LoopbackPrivate.class.getName())));
         suite.addTest(new 
TestSuite(ldr.loadClass(LoopbackDualSync.class.getName())));
@@ -106,7 +106,7 @@ public class IgfsEventsTestSuite extends TestSuite {
     }
 
     /**
-     * Base class for all GGFS tests with primary and secondary file system.
+     * Base class for all IGFS tests with primary and secondary file system.
      */
     public abstract static class PrimarySecondaryTest extends 
IgfsEventsAbstractSelfTest {
         /** Secondary file system. */
@@ -124,7 +124,7 @@ public class IgfsEventsTestSuite extends TestSuite {
         }
 
         /**
-         * @return GGFS configuration for secondary file system.
+         * @return IGFS configuration for secondary file system.
          */
         protected IgfsConfiguration getSecondaryGgfsConfiguration() throws 
IgniteCheckedException {
             IgfsConfiguration ggfsCfg = super.getIgfsConfiguration();

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoop20FileSystemAbstractSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoop20FileSystemAbstractSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoop20FileSystemAbstractSelfTest.java
index a90a6d4..fc1dab0 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoop20FileSystemAbstractSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoop20FileSystemAbstractSelfTest.java
@@ -69,7 +69,7 @@ public abstract class IgfsHadoop20FileSystemAbstractSelfTest 
extends IgfsCommonA
     /** File system. */
     private static AbstractFileSystem fs;
 
-    /** Default GGFS mode. */
+    /** Default IGFS mode. */
     protected IgfsMode mode;
 
     /** Primary file system URI. */
@@ -81,7 +81,7 @@ public abstract class IgfsHadoop20FileSystemAbstractSelfTest 
extends IgfsCommonA
     /**
      * Constructor.
      *
-     * @param mode Default GGFS mode.
+     * @param mode Default IGFS mode.
      */
     protected IgfsHadoop20FileSystemAbstractSelfTest(IgfsMode mode) {
         this.mode = mode;
@@ -142,7 +142,7 @@ public abstract class 
IgfsHadoop20FileSystemAbstractSelfTest extends IgfsCommonA
      */
     private void startNodes() throws Exception {
         if (mode != PRIMARY) {
-            // Start secondary GGFS.
+            // Start secondary IGFS.
             IgfsConfiguration ggfsCfg = new IgfsConfiguration();
 
             ggfsCfg.setDataCacheName("partitioned");
@@ -246,10 +246,10 @@ public abstract class 
IgfsHadoop20FileSystemAbstractSelfTest extends IgfsCommonA
     }
 
     /**
-     * Gets GGFS configuration.
+     * Gets IGFS configuration.
      *
      * @param gridName Grid name.
-     * @return GGFS configuration.
+     * @return IGFS configuration.
      */
     protected IgfsConfiguration ggfsConfiguration(String gridName) throws 
IgniteCheckedException {
         IgfsConfiguration cfg = new IgfsConfiguration();
@@ -1726,7 +1726,7 @@ public abstract class 
IgfsHadoop20FileSystemAbstractSelfTest extends IgfsCommonA
         final Path filePath = new Path(ggfsHome, "someFile");
 
         final FSDataOutputStream s = fs.create(filePath, 
EnumSet.noneOf(CreateFlag.class),
-            Options.CreateOpts.perms(FsPermission.getDefault())); // Open 
stream before stopping GGFS.
+            Options.CreateOpts.perms(FsPermission.getDefault())); // Open 
stream before stopping IGFS.
 
         try {
             G.stopAll(true); // Stop the server.

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopDualAbstractSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopDualAbstractSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopDualAbstractSelfTest.java
index 36d158f..b21f022 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopDualAbstractSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopDualAbstractSelfTest.java
@@ -44,10 +44,10 @@ import static 
org.apache.ignite.igfs.hadoop.IgfsHadoopParameters.*;
 import static 
org.apache.ignite.internal.processors.igfs.IgfsAbstractSelfTest.*;
 
 /**
- * Tests for GGFS working in mode when remote file system exists: DUAL_SYNC, 
DUAL_ASYNC.
+ * Tests for IGFS working in mode when remote file system exists: DUAL_SYNC, 
DUAL_ASYNC.
  */
 public abstract class IgfsHadoopDualAbstractSelfTest extends 
IgfsCommonAbstractTest {
-    /** GGFS block size. */
+    /** IGFS block size. */
     protected static final int IGFS_BLOCK_SIZE = 512 * 1024;
 
     /** Amount of blocks to prefetch. */
@@ -92,19 +92,19 @@ public abstract class IgfsHadoopDualAbstractSelfTest 
extends IgfsCommonAbstractT
     /** Default data chunk (128 bytes). */
     protected static byte[] chunk;
 
-    /** Primary GGFS. */
+    /** Primary IGFS. */
     protected static IgfsImpl ggfs;
 
-    /** Secondary GGFS. */
+    /** Secondary IGFS. */
     protected static IgfsImpl ggfsSecondary;
 
-    /** GGFS mode. */
+    /** IGFS mode. */
     protected final IgfsMode mode;
 
     /**
      * Constructor.
      *
-     * @param mode GGFS mode.
+     * @param mode IGFS mode.
      */
     protected IgfsHadoopDualAbstractSelfTest(IgfsMode mode) {
         this.mode = mode;
@@ -112,11 +112,11 @@ public abstract class IgfsHadoopDualAbstractSelfTest 
extends IgfsCommonAbstractT
     }
 
     /**
-     * Start grid with GGFS.
+     * Start grid with IGFS.
      *
      * @param gridName Grid name.
-     * @param ggfsName GGFS name
-     * @param mode GGFS mode.
+     * @param ggfsName IGFS name
+     * @param mode IGFS mode.
      * @param secondaryFs Secondary file system (optional).
      * @param restCfg Rest configuration string (optional).
      * @return Started grid instance.

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemAbstractSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemAbstractSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemAbstractSelfTest.java
index 797f4d7..c124136 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemAbstractSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemAbstractSelfTest.java
@@ -97,7 +97,7 @@ public abstract class IgfsHadoopFileSystemAbstractSelfTest 
extends IgfsCommonAbs
     /** File system. */
     private static FileSystem fs;
 
-    /** Default GGFS mode. */
+    /** Default IGFS mode. */
     protected final IgfsMode mode;
 
     /** Skip embedded mode flag. */
@@ -129,7 +129,7 @@ public abstract class IgfsHadoopFileSystemAbstractSelfTest 
extends IgfsCommonAbs
     /**
      * Constructor.
      *
-     * @param mode Default GGFS mode.
+     * @param mode Default IGFS mode.
      * @param skipEmbed Whether to skip embedded mode.
      * @param skipLocShmem Whether to skip local shmem mode.
      * @param skipLocTcp Whether to skip local TCP mode.
@@ -171,7 +171,7 @@ public abstract class IgfsHadoopFileSystemAbstractSelfTest 
extends IgfsCommonAbs
      */
     private void startNodes() throws Exception {
         if (mode != PRIMARY) {
-            // Start secondary GGFS.
+            // Start secondary IGFS.
             IgfsConfiguration ggfsCfg = new IgfsConfiguration();
 
             ggfsCfg.setDataCacheName("partitioned");
@@ -313,10 +313,10 @@ public abstract class 
IgfsHadoopFileSystemAbstractSelfTest extends IgfsCommonAbs
     }
 
     /**
-     * Gets GGFS configuration.
+     * Gets IGFS configuration.
      *
      * @param gridName Grid name.
-     * @return GGFS configuration.
+     * @return IGFS configuration.
      */
     protected IgfsConfiguration ggfsConfiguration(String gridName) throws 
IgniteCheckedException {
         IgfsConfiguration cfg = new IgfsConfiguration();
@@ -1976,7 +1976,7 @@ public abstract class 
IgfsHadoopFileSystemAbstractSelfTest extends IgfsCommonAbs
     public void testClientReconnect() throws Exception {
         Path filePath = new Path(PRIMARY_URI, "file1");
 
-        final FSDataOutputStream s = fs.create(filePath); // Open the stream 
before stopping GGFS.
+        final FSDataOutputStream s = fs.create(filePath); // Open the stream 
before stopping IGFS.
 
         try {
             G.stopAll(true); // Stop the server.

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemClientSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemClientSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemClientSelfTest.java
index 994a5bd..b44c2d8 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemClientSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemClientSelfTest.java
@@ -41,7 +41,7 @@ import static 
org.apache.ignite.cache.CacheWriteSynchronizationMode.*;
 import static 
org.apache.ignite.internal.util.ipc.shmem.IpcSharedMemoryServerEndpoint.*;
 
 /**
- * Test interaction between a GGFS client and a GGFS server.
+ * Test interaction between a IGFS client and a IGFS server.
  */
 public class IgfsHadoopFileSystemClientSelfTest extends IgfsCommonAbstractTest 
{
     /** Logger. */
@@ -156,7 +156,7 @@ public class IgfsHadoopFileSystemClientSelfTest extends 
IgfsCommonAbstractTest {
     }
 
     /**
-     * Set GGFS REST handler error flag to the given state.
+     * Set IGFS REST handler error flag to the given state.
      *
      * @param flag Flag state.
      * @throws Exception If failed.

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemHandshakeSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemHandshakeSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemHandshakeSelfTest.java
index db2f628..a371dae 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemHandshakeSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemHandshakeSelfTest.java
@@ -45,7 +45,7 @@ import static 
org.apache.ignite.internal.igfs.hadoop.IgfsHadoopUtils.*;
 import static 
org.apache.ignite.internal.util.ipc.shmem.IpcSharedMemoryServerEndpoint.*;
 
 /**
- * Tests for GGFS file system handshake.
+ * Tests for IGFS file system handshake.
  */
 public class IgfsHadoopFileSystemHandshakeSelfTest extends 
IgfsCommonAbstractTest {
     /** IP finder. */
@@ -54,10 +54,10 @@ public class IgfsHadoopFileSystemHandshakeSelfTest extends 
IgfsCommonAbstractTes
     /** Grid name. */
     private static final String GRID_NAME = "grid";
 
-    /** GGFS name. */
+    /** IGFS name. */
     private static final String IGFS_NAME = "igfs";
 
-    /** GGFS path. */
+    /** IGFS path. */
     private static final IgfsPath PATH = new IgfsPath("/path");
 
     /** {@inheritDoc} */
@@ -66,7 +66,7 @@ public class IgfsHadoopFileSystemHandshakeSelfTest extends 
IgfsCommonAbstractTes
     }
 
     /**
-     * Tests for Grid and GGFS having normal names.
+     * Tests for Grid and IGFS having normal names.
      *
      * @throws Exception If failed.
      */
@@ -91,7 +91,7 @@ public class IgfsHadoopFileSystemHandshakeSelfTest extends 
IgfsCommonAbstractTes
     }
 
     /**
-     * Tests for Grid having {@code null} name and GGFS having normal name.
+     * Tests for Grid having {@code null} name and IGFS having normal name.
      *
      * @throws Exception If failed.
      */
@@ -116,7 +116,7 @@ public class IgfsHadoopFileSystemHandshakeSelfTest extends 
IgfsCommonAbstractTes
     }
 
     /**
-     * Tests for Grid having normal name and GGFS having {@code null} name.
+     * Tests for Grid having normal name and IGFS having {@code null} name.
      *
      * @throws Exception If failed.
      */
@@ -141,7 +141,7 @@ public class IgfsHadoopFileSystemHandshakeSelfTest extends 
IgfsCommonAbstractTes
     }
 
     /**
-     * Tests for Grid having {@code null} name and GGFS having {@code null} 
name.
+     * Tests for Grid having {@code null} name and IGFS having {@code null} 
name.
      *
      * @throws Exception If failed.
      */
@@ -169,7 +169,7 @@ public class IgfsHadoopFileSystemHandshakeSelfTest extends 
IgfsCommonAbstractTes
      * Perform startup.
      *
      * @param dfltGridName Default Grid name.
-     * @param dfltGgfsName Default GGFS name.
+     * @param dfltGgfsName Default IGFS name.
      * @throws Exception If failed.
      */
     private void startUp(boolean dfltGridName, boolean dfltGgfsName) throws 
Exception {
@@ -184,7 +184,7 @@ public class IgfsHadoopFileSystemHandshakeSelfTest extends 
IgfsCommonAbstractTes
      * Create Grid configuration.
      *
      * @param dfltGridName Default Grid name.
-     * @param dfltGgfsName Default GGFS name.
+     * @param dfltGgfsName Default IGFS name.
      * @return Grid configuration.
      * @throws Exception If failed.
      */

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoggerSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoggerSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoggerSelfTest.java
index a6a456b..2e3a3ec 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoggerSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoggerSelfTest.java
@@ -28,7 +28,7 @@ import static org.apache.ignite.igfs.IgfsMode.*;
 import static org.apache.ignite.internal.igfs.common.IgfsLogger.*;
 
 /**
- * Grid GGFS client logger test.
+ * Grid IGFS client logger test.
  */
 public class IgfsHadoopFileSystemLoggerSelfTest extends IgfsCommonAbstractTest 
{
     /** Path string. */
@@ -40,7 +40,7 @@ public class IgfsHadoopFileSystemLoggerSelfTest extends 
IgfsCommonAbstractTest {
     /** Path. */
     private static final IgfsPath PATH = new IgfsPath(PATH_STR);
 
-    /** GGFS name. */
+    /** IGFS name. */
     private static final String IGFS_NAME = "igfs";
 
     /** Log file path. */
@@ -222,10 +222,10 @@ public class IgfsHadoopFileSystemLoggerSelfTest extends 
IgfsCommonAbstractTest {
     }
 
     /**
-     * Create GGFS file with the given path.
+     * Create IGFS file with the given path.
      *
      * @param path File path.
-     * @return GGFS file instance.
+     * @return IGFS file instance.
      */
     private IgfsFile file(String path) {
         return new IgfsFileImpl(new IgfsPath(path), new IgfsFileInfo(), 64 * 
1024 * 1024);

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoggerStateSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoggerStateSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoggerStateSelfTest.java
index 7e309b7..e282019 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoggerStateSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoggerStateSelfTest.java
@@ -44,7 +44,7 @@ import static 
org.apache.ignite.igfs.hadoop.IgfsHadoopParameters.*;
  * Ensures that sampling is really turned on/off.
  */
 public class IgfsHadoopFileSystemLoggerStateSelfTest extends 
IgfsCommonAbstractTest {
-    /** GGFS. */
+    /** IGFS. */
     private IgfsEx ggfs;
 
     /** File system. */
@@ -274,7 +274,7 @@ public class IgfsHadoopFileSystemLoggerStateSelfTest 
extends IgfsCommonAbstractT
     }
 
     /**
-     * Ensure that log directory is set to GGFS when client FS connects.
+     * Ensure that log directory is set to IGFS when client FS connects.
      *
      * @throws Exception If failed.
      */

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackAbstractSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackAbstractSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackAbstractSelfTest.java
index 6eed2f5..bd9b031 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackAbstractSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackAbstractSelfTest.java
@@ -22,14 +22,14 @@ import java.util.*;
 import static 
org.apache.ignite.internal.util.ipc.shmem.IpcSharedMemoryServerEndpoint.*;
 
 /**
- * GGFS Hadoop file system IPC loopback self test.
+ * IGFS Hadoop file system IPC loopback self test.
  */
 public abstract class IgfsHadoopFileSystemLoopbackAbstractSelfTest extends
     IgfsHadoopFileSystemAbstractSelfTest {
     /**
      * Constructor.
      *
-     * @param mode GGFS mode.
+     * @param mode IGFS mode.
      * @param skipEmbed Skip embedded mode flag.
      */
     protected IgfsHadoopFileSystemLoopbackAbstractSelfTest(IgfsMode mode, 
boolean skipEmbed) {

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedDualAsyncSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedDualAsyncSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedDualAsyncSelfTest.java
index 0865e74..6035c7a 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedDualAsyncSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedDualAsyncSelfTest.java
@@ -20,7 +20,7 @@ package org.apache.ignite.igfs;
 import static org.apache.ignite.igfs.IgfsMode.*;
 
 /**
- * GGFS Hadoop file system IPC loopback self test in DUAL_ASYNC mode.
+ * IGFS Hadoop file system IPC loopback self test in DUAL_ASYNC mode.
  */
 public class IgfsHadoopFileSystemLoopbackEmbeddedDualAsyncSelfTest extends
     IgfsHadoopFileSystemLoopbackAbstractSelfTest {

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedDualSyncSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedDualSyncSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedDualSyncSelfTest.java
index f831325..3900b0b 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedDualSyncSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedDualSyncSelfTest.java
@@ -20,7 +20,7 @@ package org.apache.ignite.igfs;
 import static org.apache.ignite.igfs.IgfsMode.*;
 
 /**
- * GGFS Hadoop file system IPC loopback self test in DUAL_SYNC mode.
+ * IGFS Hadoop file system IPC loopback self test in DUAL_SYNC mode.
  */
 public class IgfsHadoopFileSystemLoopbackEmbeddedDualSyncSelfTest
     extends IgfsHadoopFileSystemLoopbackAbstractSelfTest {

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedPrimarySelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedPrimarySelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedPrimarySelfTest.java
index f21433a..dee717e 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedPrimarySelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedPrimarySelfTest.java
@@ -20,7 +20,7 @@ package org.apache.ignite.igfs;
 import static org.apache.ignite.igfs.IgfsMode.*;
 
 /**
- * GGFS Hadoop file system IPC loopback self test in PRIMARY mode.
+ * IGFS Hadoop file system IPC loopback self test in PRIMARY mode.
  */
 public class IgfsHadoopFileSystemLoopbackEmbeddedPrimarySelfTest
     extends IgfsHadoopFileSystemLoopbackAbstractSelfTest {

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedSecondarySelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedSecondarySelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedSecondarySelfTest.java
index 0c163f2..1f13019 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedSecondarySelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackEmbeddedSecondarySelfTest.java
@@ -20,7 +20,7 @@ package org.apache.ignite.igfs;
 import static org.apache.ignite.igfs.IgfsMode.*;
 
 /**
- * GGFS Hadoop file system IPC loopback self test in SECONDARY mode.
+ * IGFS Hadoop file system IPC loopback self test in SECONDARY mode.
  */
 public class IgfsHadoopFileSystemLoopbackEmbeddedSecondarySelfTest extends
     IgfsHadoopFileSystemLoopbackAbstractSelfTest {

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalDualAsyncSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalDualAsyncSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalDualAsyncSelfTest.java
index 1cd8c10..4a66da6 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalDualAsyncSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalDualAsyncSelfTest.java
@@ -20,7 +20,7 @@ package org.apache.ignite.igfs;
 import static org.apache.ignite.igfs.IgfsMode.*;
 
 /**
- * GGFS Hadoop file system IPC loopback self test in DUAL_ASYNC mode.
+ * IGFS Hadoop file system IPC loopback self test in DUAL_ASYNC mode.
  */
 public class IgfsHadoopFileSystemLoopbackExternalDualAsyncSelfTest extends
     IgfsHadoopFileSystemLoopbackAbstractSelfTest {

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalDualSyncSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalDualSyncSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalDualSyncSelfTest.java
index d7977d8..f5f49ed 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalDualSyncSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalDualSyncSelfTest.java
@@ -20,7 +20,7 @@ package org.apache.ignite.igfs;
 import static org.apache.ignite.igfs.IgfsMode.*;
 
 /**
- * GGFS Hadoop file system IPC loopback self test in DUAL_SYNC mode.
+ * IGFS Hadoop file system IPC loopback self test in DUAL_SYNC mode.
  */
 public class IgfsHadoopFileSystemLoopbackExternalDualSyncSelfTest
     extends IgfsHadoopFileSystemLoopbackAbstractSelfTest {

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalPrimarySelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalPrimarySelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalPrimarySelfTest.java
index f44526d..5903704 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalPrimarySelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalPrimarySelfTest.java
@@ -20,7 +20,7 @@ package org.apache.ignite.igfs;
 import static org.apache.ignite.igfs.IgfsMode.*;
 
 /**
- * GGFS Hadoop file system IPC loopback self test in PRIMARY mode.
+ * IGFS Hadoop file system IPC loopback self test in PRIMARY mode.
  */
 public class IgfsHadoopFileSystemLoopbackExternalPrimarySelfTest
     extends IgfsHadoopFileSystemLoopbackAbstractSelfTest {

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalSecondarySelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalSecondarySelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalSecondarySelfTest.java
index 8924699..0e95f83 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalSecondarySelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemLoopbackExternalSecondarySelfTest.java
@@ -20,7 +20,7 @@ package org.apache.ignite.igfs;
 import static org.apache.ignite.igfs.IgfsMode.*;
 
 /**
- * GGFS Hadoop file system IPC loopback self test in SECONDARY mode.
+ * IGFS Hadoop file system IPC loopback self test in SECONDARY mode.
  */
 public class IgfsHadoopFileSystemLoopbackExternalSecondarySelfTest extends
     IgfsHadoopFileSystemLoopbackAbstractSelfTest {

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemSecondaryModeSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemSecondaryModeSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemSecondaryModeSelfTest.java
index b268679..bdce59e 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemSecondaryModeSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemSecondaryModeSelfTest.java
@@ -50,7 +50,7 @@ public class IgfsHadoopFileSystemSecondaryModeSelfTest 
extends IgfsCommonAbstrac
     /** Pattern doesn't matching the path. */
     private static final String PATTERN_NOT_MATCHES = "/files";
 
-    /** Default GGFS mode. */
+    /** Default IGFS mode. */
     private IgfsMode mode;
 
     /** Path modes. */
@@ -292,7 +292,7 @@ public class IgfsHadoopFileSystemSecondaryModeSelfTest 
extends IgfsCommonAbstrac
     }
 
     /**
-     * Set GGFS modes for particular paths.
+     * Set IGFS modes for particular paths.
      *
      * @param modes Modes.
      */

http://git-wip-us.apache.org/repos/asf/incubator-ignite/blob/167c1b1a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemShmemAbstractSelfTest.java
----------------------------------------------------------------------
diff --git 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemShmemAbstractSelfTest.java
 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemShmemAbstractSelfTest.java
index 446b17d..ed7b7cc 100644
--- 
a/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemShmemAbstractSelfTest.java
+++ 
b/modules/hadoop/src/test/java/org/apache/ignite/igfs/IgfsHadoopFileSystemShmemAbstractSelfTest.java
@@ -28,13 +28,13 @@ import java.util.concurrent.*;
 import static 
org.apache.ignite.internal.util.ipc.shmem.IpcSharedMemoryServerEndpoint.*;
 
 /**
- * GGFS Hadoop file system IPC self test.
+ * IGFS Hadoop file system IPC self test.
  */
 public abstract class IgfsHadoopFileSystemShmemAbstractSelfTest extends 
IgfsHadoopFileSystemAbstractSelfTest {
     /**
      * Constructor.
      *
-     * @param mode GGFS mode.
+     * @param mode IGFS mode.
      * @param skipEmbed Skip embedded mode flag.
      */
     protected IgfsHadoopFileSystemShmemAbstractSelfTest(IgfsMode mode, boolean 
skipEmbed) {

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