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Posted to issues@hbase.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2012/11/06 23:28:12 UTC
[jira] [Commented] (HBASE-6958) TestAssignmentManager sometimes
fails
[ https://issues.apache.org/jira/browse/HBASE-6958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13491892#comment-13491892 ]
Ted Yu commented on HBASE-6958:
-------------------------------
+1 on patch for 0.94
Looped TestAssignmentManager 8 times locally with the patch and they passed.
> 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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