[HIVE-26376] Hive Metastore connection leak (OOM Error)

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.1.2
• Component/s: Metastore
• Labels: pull-request-available

Environment

• Assignee: Stamatis Zampetakis
• Reporter: Ranith Sardar
• Created: 07/Jul/22 06:37
• Updated: 18/Sep/22 00:26

Description

Hive version:3.1.2

Hive metastore heap size is 14GB, Memory Leak is happening after 4-5 days, hive meta-store throwing error with OOM.

If we disable the configuration, the memory leak disappears.

In the case of, Heap dump size 3.5GB, a large number of filesystem objects(> 9k instances) are being retained. It's occupying most of the heap space. Added snapshot from the eclipse MAT.

Bellow are part of the stack trace for OOM error:

at org.apache.hadoop.hive.common.FileUtils.getFileStatusOrNull(Lorg/apache/hadoop/fs/FileSystem;Lorg/apache/hadoop/fs/Path;)Lorg/apache/hadoop/fs/FileStatus; (FileUtils.java:801)
  at org.apache.hadoop.hive.ql.security.authorization.StorageBasedAuthorizationProvider.checkPermissions(Lorg/apache/hadoop/conf/Configuration;Lorg/apache/hadoop/fs/Path;Ljava/util/EnumSet;)V (StorageBasedAuthorizationProvider.java:371)
  at org.apache.hadoop.hive.ql.security.authorization.StorageBasedAuthorizationProvider.authorize(Lorg/apache/hadoop/fs/Path;[Lorg/apache/hadoop/hive/ql/security/authorization/Privilege;[Lorg/apache/hadoop/hive/ql/security/authorization/Privilege;)V (StorageBasedAuthorizationProvider.java:346)
  at org.apache.hadoop.hive.ql.security.authorization.StorageBasedAuthorizationProvider.authorize(Lorg/apache/hadoop/hive/metastore/api/Database;[Lorg/apache/hadoop/hive/ql/security/authorization/Privilege;[Lorg/apache/hadoop/hive/ql/security/authorization/Privilege;)V (StorageBasedAuthorizationProvider.java:154)
  at org.apache.hadoop.hive.ql.security.authorization.AuthorizationPreEventListener.authorizeReadDatabase(Lorg/apache/hadoop/hive/metastore/events/PreReadDatabaseEvent;)V (AuthorizationPreEventListener.java:208)
  at org.apache.hadoop.hive.ql.security.authorization.AuthorizationPreEventListener.onEvent(Lorg/apache/hadoop/hive/metastore/events/PreEventContext;)V (AuthorizationPreEventListener.java:153)
  at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.firePreEvent(Lorg/apache/hadoop/hive/metastore/events/PreEventContext;)V (HiveMetaStore.java:3221)
  at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.get_database(Ljava/lang/String;)Lorg/apache/hadoop/hive/metastore/api/Database; (HiveMetaStore.java:1352)

Issue Links

• links to: GitHub Pull Request #3424