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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-13901) Error while calling watcher on creating and deleting an HBase table
Date Mon, 15 Jun 2015 22:35:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-13901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14587046#comment-14587046
] 

Hudson commented on HBASE-13901:
--------------------------------

FAILURE: Integrated in HBase-TRUNK #6573 (See [https://builds.apache.org/job/HBase-TRUNK/6573/])
HBASE-13901 Error while calling watcher on creating and deleting an HBase table (apurtell:
rev d28f299807c4c6c96dd3dff000a9f9f98277b6cf)
* hbase-client/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKUtil.java


> Error while calling watcher on creating and deleting an HBase table
> -------------------------------------------------------------------
>
>                 Key: HBASE-13901
>                 URL: https://issues.apache.org/jira/browse/HBASE-13901
>             Project: HBase
>          Issue Type: Bug
>            Reporter: neha
>            Assignee: Ashish Singhi
>            Priority: Minor
>             Fix For: 2.0.0, 0.98.14, 1.0.2, 1.2.0, 1.1.1
>
>         Attachments: HBASE-13901.patch
>
>
> [Scenario for Reproducing ] :
> 1. Create and delete 10 different HBase tables concurrently (10 threads creating, disabling
and deleting their own tables)
> 2. Check the HBase Master logs( Null Pointer Exceptions observed caused by data race)
> {noformat}
> ERROR [main-EventThread] zookeeper.ClientCnxn: Error while calling watcher 
> java.lang.NullPointerException
>  at org.apache.hadoop.hbase.zookeeper.ZKUtil$NodeAndData.isEmpty(ZKUtil.java:667)
>  at org.apache.hadoop.hbase.security.access.ZKPermissionWatcher.refreshNodes(ZKPermissionWatcher.java:152)
>  at org.apache.hadoop.hbase.security.access.ZKPermissionWatcher.nodeChildrenChanged(ZKPermissionWatcher.java:142)
>  at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:439)
>  at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:543)
>  at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:518)
> 2015-06-05 20:32:04,553 INFO  [B.defaultRpcServer.handler=24,queue=4,port=16000] client.ConnectionManager$HConnectionImplementation:
Closing zookeeper sessionid=0x200541f1fd400c0
> 2015-06-05 20:32:04,561 INFO  [B.defaultRpcServer.handler=24,queue=4,port=16000] zookeeper.ZooKeeper:
Session: 0x200541f1fd400c0 closed
> 2015-06-05 20:32:04,561 INFO  [B.defaultRpcServer.handler=24,queue=4,port=16000-EventThread]
zookeeper.ClientCnxn: EventThread shut down
> 2015-06-05 20:32:04,631 INFO  [B.defaultRpcServer.handler=7,queue=2,port=16000] client.ConnectionManager$HConnectionImplementation:
Closing zookeeper sessionid=0x200541f1fd400c2
> 2015-06-05 20:32:04,644 INFO  [B.defaultRpcServer.handler=7,queue=2,port=16000] zookeeper.ZooKeeper:
Session: 0x200541f1fd400c2 closed
> 2015-06-05 20:32:04,644 INFO  [B.defaultRpcServer.handler=7,queue=2,port=16000-EventThread]
zookeeper.ClientCnxn: EventThread shut down 
> {noformat}



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