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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-13836) DbNotifications giving an error = Invalid state. Transaction has already started
Date Fri, 27 May 2016 19:08:12 GMT

    [ https://issues.apache.org/jira/browse/HIVE-13836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15304580#comment-15304580
] 

Ashutosh Chauhan commented on HIVE-13836:
-----------------------------------------

He was not in contributor list of jira. Just added him.

> DbNotifications giving an error = Invalid state. Transaction has already started
> --------------------------------------------------------------------------------
>
>                 Key: HIVE-13836
>                 URL: https://issues.apache.org/jira/browse/HIVE-13836
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Nachiket Vaidya
>            Assignee: Nachiket Vaidya
>            Priority: Critical
>              Labels: patch-available
>         Attachments: HIVE-13836.patch
>
>
> I used pyhs2 python client to create tables/partitions in hive. I was working fine until
I moved to multithreaded scripts which created 8 connections and ran DDL queries concurrently.
> I got the error as
> {noformat}
> 2016-05-04 17:49:26,226 ERROR org.apache.hadoop.hive.metastore.RetryingHMSHandler: [pool-4-thread-194]:
HMSHandler Fatal error: Invalid state. Transaction has already started
> org.datanucleus.transaction.NucleusTransactionException: Invalid state. Transaction has
already started
>         at org.datanucleus.transaction.TransactionManager.begin(TransactionManager.java:47)
>         at org.datanucleus.TransactionImpl.begin(TransactionImpl.java:131)
>         at org.datanucleus.api.jdo.JDOTransaction.internalBegin(JDOTransaction.java:88)
>         at org.datanucleus.api.jdo.JDOTransaction.begin(JDOTransaction.java:80)
>         at org.apache.hadoop.hive.metastore.ObjectStore.openTransaction(ObjectStore.java:463)
>         at org.apache.hadoop.hive.metastore.ObjectStore.addNotificationEvent(ObjectStore.java:7522)
>         at sun.reflect.GeneratedMethodAccessor20.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:114)
>         at com.sun.proxy.$Proxy10.addNotificationEvent(Unknown Source)
>         at org.apache.hive.hcatalog.listener.DbNotificationListener.enqueue(DbNotificationListener.java:261)
>         at org.apache.hive.hcatalog.listener.DbNotificationListener.onCreateTable(DbNotificationListener.java:123)
>         at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.create_table_core(HiveMetaStore.java:1483)
>         at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.create_table_with_environment_context(HiveMetaStore.java:1502)
>         at sun.reflect.GeneratedMethodAccessor57.invoke(Unknown Source)
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>         at java.lang.reflect.Method.invoke(Method.java:606)
>         at org.apache.hadoop.hive.metastore.RetryingHMSHandler.invokeInternal(RetryingHMSHandler.java:138)
>         at org.apache.hadoop.hive.metastore.RetryingHMSHandler.invoke(RetryingHMSHandler.java:99)
>         at com.sun.proxy.$Proxy14.create_table_with_environment_context(Unknown Source)
>         at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Processor$create_table_with_environment_context.getResult(ThriftHiveMetastore.java:9267)
> {noformat}



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