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https://issues.apache.org/jira/browse/HADOOP-16029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16740679#comment-16740679
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Hudson commented on HADOOP-16029:
---------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #15763 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/15763/])
HADOOP-16029. Consecutive StringBuilder.append can be reused. (gifuma: rev
fb8932a727f757b2e9c1c61a18145878d0eb77bd)
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/Path.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CipherSuite.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NamenodeFsck.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/BlockLocation.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/RedundantEditLogInputStream.java
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hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/CopyListingFileStatus.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/service/launcher/InterruptEscalator.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/ECSchema.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetworkTopology.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/token/Token.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/sink/GraphiteSink.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/authorize/AccessControlList.java
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hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/DatanodeInfo.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/SemaphoredDelegatingExecutor.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/bloom/DynamicBloomFilter.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
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hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSUtilClient.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/StoragePolicySummary.java
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hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/resolver/PathLocation.java
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hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/util/StripedBlockUtil.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/Ls.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeAdminManager.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/diskbalancer/command/PlanCommand.java
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hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/ConnectionContext.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSZKFailoverController.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/SequenceFile.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/CpuTimeTracker.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/SignalLogger.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileStatus.java
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hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterQuotaUsage.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/JournalSet.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/EncryptionZoneManager.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogLoader.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/VolumeScanner.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/MD5Hash.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/alias/CredentialProvider.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/Shell.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/WritableRpcEngine.java
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hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DFSInputStream.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/ServerCommand.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/sink/StatsDSink.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/AbstractDNSToSwitchMapping.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLog.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FSDataOutputStream.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/tools/GetGroupsBase.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/alias/CredentialShell.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/QuotaByStorageTypeEntry.java
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hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/ReencryptionStatus.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/find/BaseExpression.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/Count.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileEncryptionInfo.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/find/Find.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileUtil.java
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hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/HdfsPathHandle.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/permission/AclEntry.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/ssl/SSLHostnameVerifier.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/net/NetUtils.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/BlockingThreadPoolExecutorService.java
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hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogOp.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/PathData.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/compress/CompressionCodecFactory.java
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hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/ProviderUtils.java
> Consecutive StringBuilder.append can be reused
> ----------------------------------------------
>
> Key: HADOOP-16029
> URL: https://issues.apache.org/jira/browse/HADOOP-16029
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Ayush Saxena
> Assignee: Ayush Saxena
> Priority: Major
> Fix For: 3.3.0
>
> Attachments: HADOOP-16029-01.patch, HADOOP-16029-02.patch,
> HADOOP-16029-03.patch, HADOOP-16029-04.patch, HADOOP-16029-05.patch
>
>
> Consecutive calls to StringBuffer/StringBuilder .append should be chained,
> reusing the target object. This can improve the performance by producing a
> smaller bytecode, reducing overhead and improving inlining.
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