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https://issues.apache.org/jira/browse/HBASE-6958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13473414#comment-13473414
]
Jimmy Xiang commented on HBASE-6958:
------------------------------------
I am working on HBASE-6611, and very close to post a new patch (early next week
most likely), which will change this test a little bit. We can check if the
issue is still there with that patch.
> TestAssignmentManager sometimes fails in trunk
> ----------------------------------------------
>
> Key: HBASE-6958
> URL: https://issues.apache.org/jira/browse/HBASE-6958
> Project: HBase
> Issue Type: Bug
> Reporter: Ted Yu
> Fix For: 0.96.0
>
>
> 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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