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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12981) FSHLog: UNEXPECTED java.lang.ArrayIndexOutOfBoundsException: -4
Date Fri, 06 Feb 2015 23:54:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14310226#comment-14310226
] 

Hadoop QA commented on HBASE-12981:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12697132/12981.0.98.txt
  against 0.98 branch at commit 75148385ee5b2065992aea19a810436196576f20.
  ATTACHMENT ID: 12697132

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:red}-1 javadoc{color}.  The javadoc tool appears to have generated 23 warning messages.

    {color:green}+1 checkstyle{color}.  The applied patch does not increase the total number
of checkstyle errors

    {color:red}-1 findbugs{color}.  The patch appears to introduce 5 new Findbugs (version
2.0.3) warnings.

    {color:red}-1 release audit{color}.  The applied patch generated 42 release audit warnings
(more than the master's current 0 warnings).

    {color:green}+1 lineLengths{color}.  The patch does not introduce lines longer than 100

  {color:green}+1 site{color}.  The mvn site goal succeeds with this patch.

     {color:red}-1 core tests{color}.  The patch failed these unit tests:
     

     {color:red}-1 core zombie tests{color}.  There are 1 zombie test(s): 	at org.apache.hadoop.hbase.TestChoreService.testCorePoolIncrease(TestChoreService.java:395)

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//testReport/
Release audit warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/patchReleaseAuditWarnings.txt
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/newPatchFindbugsWarningshbase-rest.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/newPatchFindbugsWarningshbase-annotations.html
Checkstyle Errors: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/checkstyle-aggregate.html

  Javadoc warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//artifact/patchprocess/patchJavadocWarnings.txt
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/12722//console

This message is automatically generated.

> FSHLog: UNEXPECTED java.lang.ArrayIndexOutOfBoundsException: -4
> ---------------------------------------------------------------
>
>                 Key: HBASE-12981
>                 URL: https://issues.apache.org/jira/browse/HBASE-12981
>             Project: HBase
>          Issue Type: Bug
>          Components: wal
>    Affects Versions: 0.98.1
>            Reporter: stack
>            Assignee: stack
>         Attachments: 12981.0.98.txt
>
>
> A user reported the below. It happens after the RS has been running a while.
> 015-01-20 22:33:23,031 ERROR org.apache.hadoop.hbase.regionserver.wal.FSHLog: UNEXPECTED
> java.lang.ArrayIndexOutOfBoundsException: -4
> at org.apache.hadoop.hbase.regionserver.wal.FSHLog$AsyncWriter.run(FSHLog.java:1149)
> at java.lang.Thread.run(Thread.java:745)
> 2015-01-20 22:33:23,035 INFO org.apache.hadoop.hbase.regionserver.wal.FSHLog: regionserver60020-WAL.AsyncWriter
exiting
> ##################
> Similarly on Node 23 - on 12-20-2014 05:13:
> 2014-12-20 05:13:40,715 ERROR org.apache.hadoop.hbase.regionserver.wal.FSHLog: UNEXPECTED
> java.lang.ArrayIndexOutOfBoundsException: -3
> at org.apache.hadoop.hbase.regionserver.wal.FSHLog$AsyncWriter.run(FSHLog.java:1149)
> at java.lang.Thread.run(Thread.java:745)
> ###################
> Looking in code, I can't see how this could come about other than our write seqid ran
over the top of a long (unlikely). I think this a 0.98 issue since 1.0+ is different here.
It does:
> int index = Math.abs(this.syncRunnerIndex++) % this.syncRunners.length;
> I'm going to add logging of the circumstance that produces a negative index and then
defense against our using negative indices; there could be more going on in here, more than
I can see.



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