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From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-6958) TestAssignmentManager sometimes fails
Date Tue, 06 Nov 2012 21:16:14 GMT

     [ https://issues.apache.org/jira/browse/HBASE-6958?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jimmy Xiang updated HBASE-6958:
-------------------------------

    Attachment: trunk-6958.patch
    
> TestAssignmentManager sometimes fails
> -------------------------------------
>
>                 Key: HBASE-6958
>                 URL: https://issues.apache.org/jira/browse/HBASE-6958
>             Project: HBase
>          Issue Type: Bug
>          Components: test
>            Reporter: Ted Yu
>            Assignee: Jimmy Xiang
>             Fix For: 0.96.0, 0.94.4
>
>         Attachments: 6958_0.94.patch, trunk-6958.patch
>
>
> From https://builds.apache.org/job/HBase-TRUNK/3432/testReport/junit/org.apache.hadoop.hbase.master/TestAssignmentManager/testBalanceOnMasterFailoverScenarioWithOpenedNode/
:
> {code}
> Stacktrace
> java.lang.Exception: test timed out after 5000 milliseconds
> 	at java.lang.System.arraycopy(Native Method)
> 	at java.lang.ThreadGroup.remove(ThreadGroup.java:969)
> 	at java.lang.ThreadGroup.threadTerminated(ThreadGroup.java:942)
> 	at java.lang.Thread.exit(Thread.java:732)
> ...
> 2012-10-06 00:46:12,521 DEBUG [MASTER_CLOSE_REGION-mockedAMExecutor-0] zookeeper.ZKUtil(1141):
mockedServer-0x13a33892de7000e Retrieved 81 byte(s) of data from znode /hbase/unassigned/dc01abf9cd7fd0ea256af4df02811640
and set watcher; region=t,,1349484359011.dc01abf9cd7fd0ea256af4df02811640., state=M_ZK_REGION_OFFLINE,
servername=master,1,1, createTime=1349484372509, payload.length=0
> 2012-10-06 00:46:12,522 ERROR [MASTER_CLOSE_REGION-mockedAMExecutor-0] executor.EventHandler(205):
Caught throwable while processing event RS_ZK_REGION_CLOSED
> java.lang.NullPointerException
> 	at org.apache.hadoop.hbase.master.TestAssignmentManager$MockedLoadBalancer.randomAssignment(TestAssignmentManager.java:773)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.getRegionPlan(AssignmentManager.java:1709)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.getRegionPlan(AssignmentManager.java:1666)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1435)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1155)
> 	at org.apache.hadoop.hbase.master.TestAssignmentManager$AssignmentManagerWithExtrasForTesting.assign(TestAssignmentManager.java:1035)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1130)
> 	at org.apache.hadoop.hbase.master.AssignmentManager.assign(AssignmentManager.java:1125)
> 	at org.apache.hadoop.hbase.master.handler.ClosedRegionHandler.process(ClosedRegionHandler.java:106)
> 	at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:202)
> 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> 	at java.lang.Thread.run(Thread.java:722)
> 2012-10-06 00:46:12,522 DEBUG [pool-1-thread-1-EventThread] master.AssignmentManager(670):
Handling transition=M_ZK_REGION_OFFLINE, server=master,1,1, region=dc01abf9cd7fd0ea256af4df02811640,
current state from region state map ={t,,1349484359011.dc01abf9cd7fd0ea256af4df02811640. state=OFFLINE,
ts=1349484372508, server=null}
> {code}
> Looks like NPE happened on this line:
> {code}
>       this.gate.set(true);
> {code}

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