[ https://issues.apache.org/jira/browse/HIVE-20192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sankar Hariappan updated HIVE-20192: ------------------------------------ Attachment: HIVE-20192.01-branch-3.patch > HS2 with embedded metastore is leaking JDOPersistenceManager objects. > --------------------------------------------------------------------- > > Key: HIVE-20192 > URL: https://issues.apache.org/jira/browse/HIVE-20192 > Project: Hive > Issue Type: Bug > Components: HiveServer2 > Affects Versions: 3.0.0, 3.1.0, 4.0.0 > Reporter: Sankar Hariappan > Assignee: Sankar Hariappan > Priority: Major > Labels: HiveServer2, pull-request-available > Fix For: 4.0.0 > > Attachments: HIVE-20192.01-branch-3.patch, HIVE-20192.01.patch, > HIVE-20192.02.patch > > > Hiveserver2 instances where crashing every 3-4 days and observed HS2 in on > unresponsive state. Also, observed that the FGC collection happening regularly > From JXray report it is seen that pmCache(List of JDOPersistenceManager > objects) is occupying 84% of the heap and there are around 16,000 references > of UDFClassLoader. > {code:java} > 10,759,230K (84.7%) Object tree for GC root(s) Java Static > org.apache.hadoop.hive.metastore.ObjectStore.pmf > - org.datanucleus.api.jdo.JDOPersistenceManagerFactory.pmCache ↘ 10,744,419K > (84.6%), 1 reference(s) > - j.u.Collections$SetFromMap.m ↘ 10,744,419K (84.6%), 1 reference(s) > - {java.util.concurrent.ConcurrentHashMap}.keys ↘ 10,743,764K (84.5%), > 16,872 reference(s) > - org.datanucleus.api.jdo.JDOPersistenceManager.ec ↘ 10,738,831K > (84.5%), 16,872 reference(s) > ... 3 more references together retaining 4,933K (< 0.1%) > - java.util.concurrent.ConcurrentHashMap self 655K (< 0.1%), 1 object(s) > ... 2 more references together retaining 48b (< 0.1%) > - org.datanucleus.api.jdo.JDOPersistenceManagerFactory.nucleusContext ↘ > 14,810K (0.1%), 1 reference(s) > ... 3 more references together retaining 96b (< 0.1%){code} > When the RawStore object is re-created, it is not allowed to be updated into > the ThreadWithGarbageCleanup.threadRawStoreMap which leads to the new > RawStore never gets cleaned-up when the thread exit. > -- This message was sent by Atlassian JIRA (v7.6.3#76005)