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Date: Sat, 29 Oct 2011 23:43:32 +0000 (UTC)
From: "stack (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HBASE-4690) Intermittent
 TestRegionServerCoprocessorExceptionWithRemove#testExceptionFromCoprocessorDuringPut
 failure
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    [ https://issues.apache.org/jira/browse/HBASE-4690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13139497#comment-13139497 ] 

stack commented on HBASE-4690:
------------------------------

It just failed on jenkins:

{code}
-------------------------------------------------------------------------------
Test set: org.apache.hadoop.hbase.coprocessor.TestRegionServerCoprocessorExceptionWithAbort
-------------------------------------------------------------------------------
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 23.006 sec <<< FAILURE!
testExceptionFromCoprocessorDuringPut(org.apache.hadoop.hbase.coprocessor.TestRegionServerCoprocessorExceptionWithAbort)  Time elapsed: 1.476 sec  <<< ERROR!
java.lang.ArrayIndexOutOfBoundsException: -1
	at java.util.concurrent.CopyOnWriteArrayList.get(CopyOnWriteArrayList.java:343)
	at java.util.Collections$UnmodifiableList.get(Collections.java:1154)
	at org.apache.hadoop.hbase.HBaseTestingUtility.getRSForFirstRegionInTable(HBaseTestingUtility.java:1134)
	at org.apache.hadoop.hbase.coprocessor.TestRegionServerCoprocessorExceptionWithAbort.testExceptionFromCoprocessorDuringPut(TestRegionServerCoprocessorExceptionWithAbort.java:81)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
	at org.junit.internal.runners.statements.FailOnTimeout$1.run(FailOnTimeout.java:28)
{code}

The logging I added shows:

{code}
2011-10-29 21:45:43,883 DEBUG [Thread-183] hbase.HBaseTestingUtility(1129): Found 25 rows for table observed_table
2011-10-29 21:45:43,883 DEBUG [Thread-183] hbase.HBaseTestingUtility(1132): FirstRow=observed_table,,1319924743504.ed6d9b9f5122809fad16e61835367b48.
{code}

... which would seem to say that there are plenty of regions in the table and that the first region doesn't have an associated server.. I'm guessing.  Need to look back in this log to verify:

https://builds.apache.org/job/HBase-TRUNK/2384/artifact/trunk/target/surefire-reports/org.apache.hadoop.hbase.coprocessor.TestRegionServerCoprocessorExceptionWithAbort-output.txt

https://builds.apache.org/job/HBase-TRUNK/2384/artifact/trunk/target/surefire-reports/org.apache.hadoop.hbase.coprocessor.TestRegionServerCoprocessorExceptionWithAbort.txt

TODO
                
> Intermittent TestRegionServerCoprocessorExceptionWithRemove#testExceptionFromCoprocessorDuringPut failure
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-4690
>                 URL: https://issues.apache.org/jira/browse/HBASE-4690
>             Project: HBase
>          Issue Type: Test
>    Affects Versions: 0.92.0
>            Reporter: Ted Yu
>            Assignee: Eugene Koontz
>             Fix For: 0.92.0
>
>
> See https://builds.apache.org/view/G-L/view/HBase/job/HBase-0.92/83/testReport/junit/org.apache.hadoop.hbase.coprocessor/TestRegionServerCoprocessorExceptionWithAbort/testExceptionFromCoprocessorDuringPut/
> Somehow getRSForFirstRegionInTable() wasn't able to retrieve the region server.
> One fix for this issue is to spin up MiniCluster with 1 region server so that we don't need to search for the region server where first region is hosted.

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