nk1506 commented on code in PR #9282:
URL: https://github.com/apache/iceberg/pull/9282#discussion_r1423694607


##########
hive-metastore/src/test/java/org/apache/iceberg/hive/TestCachedClientPool.java:
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@@ -28,30 +28,49 @@
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hive.conf.HiveConf;
 import org.apache.hadoop.security.UserGroupInformation;
+import org.apache.iceberg.CatalogProperties;
 import org.apache.iceberg.CatalogUtil;
 import org.apache.iceberg.exceptions.ValidationException;
 import org.apache.iceberg.hive.CachedClientPool.Key;
 import org.apache.iceberg.relocated.com.google.common.collect.ImmutableMap;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
 
-public class TestCachedClientPool extends HiveMetastoreTest {
+public class TestCachedClientPool {
+
+  private static final String DB_NAME = "hivedb";
+
+  @RegisterExtension
+  private static final HiveMetastoreExtension HIVE_METASTORE_EXTENSION =
+      new HiveMetastoreExtension(DB_NAME, Collections.emptyMap());
 
   @Test
   public void testClientPoolCleaner() throws InterruptedException {
-    CachedClientPool clientPool = new CachedClientPool(hiveConf, 
Collections.emptyMap());
+    CatalogUtil.loadCatalog(

Review Comment:
   If we are not loading catalog it fails this test `testClientPoolCleaner` 
with assertion as 
   `assertThat(
               CachedClientPool.clientPoolCache()
                   .getIfPresent(
                       CachedClientPool.extractKey(null, 
HIVE_METASTORE_EXTENSION.hiveConf())))
           .isNull();`
           
   with error 
   `Expected :null
   Actual   :org.apache.iceberg.hive.HiveClientPool@43756cb`
   



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