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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10867) TestRegionPlacement#testRegionPlacement occasionally fails
Date Tue, 01 Apr 2014 16:15:16 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10867?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13956705#comment-13956705
] 

Ted Yu commented on HBASE-10867:
--------------------------------

In 0.98 and prior releases, servers[] is of size 10.
So there is no chance of encountering ArrayIndexOutOfBoundsException.

> TestRegionPlacement#testRegionPlacement occasionally fails
> ----------------------------------------------------------
>
>                 Key: HBASE-10867
>                 URL: https://issues.apache.org/jira/browse/HBASE-10867
>             Project: HBase
>          Issue Type: Test
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>            Priority: Minor
>             Fix For: 0.99.0
>
>         Attachments: 10867-v1.txt, 10867-v2.txt
>
>
> From https://builds.apache.org/job/HBase-TRUNK/5047/testReport/org.apache.hadoop.hbase.master/TestRegionPlacement/testRegionPlacement/
:
> {code}
> java.lang.ArrayIndexOutOfBoundsException: 10
> 	at java.util.concurrent.CopyOnWriteArrayList.get(CopyOnWriteArrayList.java:368)
> 	at java.util.concurrent.CopyOnWriteArrayList.get(CopyOnWriteArrayList.java:377)
> 	at org.apache.hadoop.hbase.LocalHBaseCluster.getRegionServer(LocalHBaseCluster.java:224)
> 	at org.apache.hadoop.hbase.MiniHBaseCluster.getRegionServer(MiniHBaseCluster.java:609)
> 	at org.apache.hadoop.hbase.master.TestRegionPlacement.killRandomServerAndVerifyAssignment(TestRegionPlacement.java:303)
> 	at org.apache.hadoop.hbase.master.TestRegionPlacement.testRegionPlacement(TestRegionPlacement.java:270)
> {code}
> In the setup:
> {code}
>     TEST_UTIL.startMiniCluster(SLAVES);
> {code}
> where SLAVES is 10.
> So when 10 was used in TEST_UTIL.getHBaseCluster().getRegionServer(killIndex), we would
get ArrayIndexOutOfBoundsException.



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