Hi folks,
we're seeing an intermittent issue between our Hive 0.13 metastore and
mysql instance. After being idle for about 5 minutes or so, any
transactions involving the metastore and mysql causes the following error
to appear in the metastore log:
2014-06-09 05:13:52,066 ERROR bonecp.ConnectionHandle
(ConnectionHandle.java:markPossiblyBroken(388)) - Database access problem.
Killing off this connection and all remaining connectio
ns in the connection pool. SQL State = 08S01
2014-06-09 05:13:52,068 ERROR metastore.RetryingHMSHandler
(RetryingHMSHandler.java:invoke(157)) - Retrying HMSHandler after 1000 ms
(attempt 1 of 1) with error: javax.jdo.JDODataStore
Exception: Communications link failure
The last packet successfully received from the server was 502,751
milliseconds ago. The last packet sent successfully to the server was 1
milliseconds ago.
at
org.datanucleus.api.jdo.NucleusJDOHelper.getJDOExceptionForNucleusException(NucleusJDOHelper.java:451)
at org.datanucleus.api.jdo.JDOQuery.execute(JDOQuery.java:275)
at
org.apache.hadoop.hive.metastore.ObjectStore.getMTable(ObjectStore.java:900)
at
org.apache.hadoop.hive.metastore.ObjectStore.getTable(ObjectStore.java:832)
at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
[full stack trace is below]
Subsequent transactions go through fine, however. This only occurs if the
metastore has has been idle for a while.
We've been looking at the code and the problem seems to lie in the channel
between the driver and metastore connection pool. We looked at the wait
time configuration settings both mysql and BoneCP. Both of them are set for
max value.
Our hive 0.12 install uses DBCP for datanucleus.connectionPoolingType, not
BoneCP and we don't see these issues there. We are not running Tez.
This seems like such a basic issue that we'd thought to check and see if
anyone else has encountered it. Any insights would be greatly appreciated.
Thanks!
Soam
=================
Full stack trace:
2014-06-09 05:13:52,066 ERROR bonecp.ConnectionHandle
(ConnectionHandle.java:markPossiblyBroken(388)) - Database access problem.
Killing off this connection and all remaining connectio
ns in the connection pool. SQL State = 08S01
2014-06-09 05:13:52,068 ERROR metastore.RetryingHMSHandler
(RetryingHMSHandler.java:invoke(157)) - Retrying HMSHandler after 1000 ms
(attempt 1 of 1) with error: javax.jdo.JDODataStore
Exception: Communications link failure
The last packet successfully received from the server was 502,751
milliseconds ago. The last packet sent successfully to the server was 1
milliseconds ago.
at
org.datanucleus.api.jdo.NucleusJDOHelper.getJDOExceptionForNucleusException(NucleusJDOHelper.java:451)
at org.datanucleus.api.jdo.JDOQuery.execute(JDOQuery.java:275)
at
org.apache.hadoop.hive.metastore.ObjectStore.getMTable(ObjectStore.java:900)
at
org.apache.hadoop.hive.metastore.ObjectStore.getTable(ObjectStore.java:832)
at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.hadoop.hive.metastore.RawStoreProxy.invoke(RawStoreProxy.java:108)
at com.sun.proxy.$Proxy0.getTable(Unknown Source)
at
org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.get_table(HiveMetaStore.java:1559)
at sun.reflect.GeneratedMethodAccessor15.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.hadoop.hive.metastore.RetryingHMSHandler.invoke(RetryingHMSHandler.java:105)
at com.sun.proxy.$Proxy11.get_table(Unknown Source)
at
org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Processor$get_table.getResult(ThriftHiveMetastore.java:8146)
at
org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Processor$get_table.getResult(ThriftHiveMetastore.java:8130)
at
org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
at
org.apache.hadoop.hive.metastore.TUGIBasedProcessor$1.run(TUGIBasedProcessor.java:110)
at
org.apache.hadoop.hive.metastore.TUGIBasedProcessor$1.run(TUGIBasedProcessor.java:107)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
at
org.apache.hadoop.hive.shims.HadoopShimsSecure.doAs(HadoopShimsSecure.java:500)
at
org.apache.hadoop.hive.metastore.TUGIBasedProcessor.process(TUGIBasedProcessor.java:118)
at
org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:206)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
NestedThrowablesStackTrace:
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications
link failure
The last packet successfully received from the server was 502,751
milliseconds ago. The last packet sent successfully to the server was 1
milliseconds ago.
at sun.reflect.GeneratedConstructorAccessor41.newInstance(Unknown
Source)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
at
com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1117)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3603)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3492)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4043)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2503)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2664)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2788)
at
com.mysql.jdbc.ConnectionImpl.setAutoCommit(ConnectionImpl.java:5282)
at
com.jolbox.bonecp.ConnectionHandle.setAutoCommit(ConnectionHandle.java:1292)
at
org.datanucleus.store.rdbms.ConnectionFactoryImpl$ManagedConnectionImpl.getConnection(ConnectionFactoryImpl.java:440)
at
org.datanucleus.store.rdbms.ConnectionFactoryImpl$ManagedConnectionImpl.getXAResource(ConnectionFactoryImpl.java:378)
at
org.datanucleus.store.connection.ConnectionManagerImpl.allocateConnection(ConnectionManagerImpl.java:328)
at
org.datanucleus.store.connection.AbstractConnectionFactory.getConnection(AbstractConnectionFactory.java:94)
at
org.datanucleus.store.AbstractStoreManager.getConnection(AbstractStoreManager.java:430)
at
org.datanucleus.store.AbstractStoreManager.getConnection(AbstractStoreManager.java:396)
at
org.datanucleus.store.rdbms.query.JDOQLQuery.performExecute(JDOQLQuery.java:621)
at org.datanucleus.store.query.Query.executeQuery(Query.java:1786)
at
org.datanucleus.store.query.Query.executeWithArray(Query.java:1672)
at org.datanucleus.api.jdo.JDOQuery.execute(JDOQuery.java:266)
at
org.apache.hadoop.hive.metastore.ObjectStore.getMTable(ObjectStore.java:900)
at
org.apache.hadoop.hive.metastore.ObjectStore.getTable(ObjectStore.java:832)
at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.hadoop.hive.metastore.RawStoreProxy.invoke(RawStoreProxy.java:108)
at com.sun.proxy.$Proxy0.getTable(Unknown Source)
at
org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.get_table(HiveMetaStore.java:1559)
at sun.reflect.GeneratedMethodAccessor15.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at
org.apache.hadoop.hive.metastore.RetryingHMSHandler.invoke(RetryingHMSHandler.java:105)
at com.sun.proxy.$Proxy11.get_table(Unknown Source)
at
org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Processor$get_table.getResult(ThriftHiveMetastore.java:8146)
at
org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Processor$get_table.getResult(ThriftHiveMetastore.java:8130)
at
org.apache.thrift.ProcessFunction.process(ProcessFunction.java:39)
at
org.apache.hadoop.hive.metastore.TUGIBasedProcessor$1.run(TUGIBasedProcessor.java:110)
at
org.apache.hadoop.hive.metastore.TUGIBasedProcessor$1.run(TUGIBasedProcessor.java:107)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
at
org.apache.hadoop.hive.shims.HadoopShimsSecure.doAs(HadoopShimsSecure.java:500)
at
org.apache.hadoop.hive.metastore.TUGIBasedProcessor.process(TUGIBasedProcessor.java:118)
at
org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:206)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.io.EOFException: Can not read response from server.
Expected to read 4 bytes, read 0 bytes before connection was unexpectedly
lost.
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:3052)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3503)
... 44 more
