[HIVE-21249] Reduce memory footprint in ObjectStore.refreshPrivileges

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Component/s: Standalone Metastore
• Target Version/s: 4.0.0
• Assignee: Daniel Dai
• Reporter: Daniel Dai
• Created: 12/Feb/19 00:29
• Updated: 14/Feb/19 06:31

Description

We found there're could be many records in TBL_COL_PRIVS for a single table (a table granted to many users), thus result a OOM in ObjectStore.listTableAllColumnGrants. We shall reduce the memory footprint for ObjectStore.refreshPrivileges. Here is the stack of OOM:

org.datanucleus.api.jdo.JDOPersistenceManager.retrieveAll(JDOPersistenceManager.java:690)
org.datanucleus.api.jdo.JDOPersistenceManager.retrieveAll(JDOPersistenceManager.java:710)
org.apache.hadoop.hive.metastore.ObjectStore.listTableAllColumnGrants(ObjectStore.java:6629)
org.apache.hadoop.hive.metastore.ObjectStore.refreshPrivileges(ObjectStore.java:6200)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:498)
org.apache.hadoop.hive.metastore.RawStoreProxy.invoke(RawStoreProxy.java:97)
com.sun.proxy.$Proxy32.refreshPrivileges(, line not available)
org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.refresh_privileges(HiveMetaStore.java:6507)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:498)
org.apache.hadoop.hive.metastore.RetryingHMSHandler.invokeInternal(RetryingHMSHandler.java:147)
org.apache.hadoop.hive.metastore.RetryingHMSHandler.invoke(RetryingHMSHandler.java:108)
com.sun.proxy.$Proxy34.refresh_privileges(, line not available)
org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Processor$refresh_privileges.getResult(ThriftHiveMetastore.java:17608)
org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Processor$refresh_privileges.getResult(ThriftHiveMetastore.java:17592)
org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:39)
org.apache.hadoop.hive.metastore.security.HadoopThriftAuthBridge$Server$TUGIAssumingProcessor$1.run(HadoopThriftAuthBridge.java:636)
org.apache.hadoop.hive.metastore.security.HadoopThriftAuthBridge$Server$TUGIAssumingProcessor$1.run(HadoopThriftAuthBridge.java:631)
java.security.AccessController.doPrivileged(Native method)
javax.security.auth.Subject.doAs(Subject.java:422)
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1688)
org.apache.hadoop.hive.metastore.security.HadoopThriftAuthBridge$Server$TUGIAssumingProcessor.process(HadoopThriftAuthBridge.java:631)
org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:286)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
java.lang.Thread.run(Thread.java:748)