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https://issues.apache.org/jira/browse/HBASE-8700?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13680055#comment-13680055
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Hadoop QA commented on HBASE-8700:
----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest 
attachment 
  http://issues.apache.org/jira/secure/attachment/12587146/HBASE-8700-v1.patch
  against trunk revision .

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

    {color:green}+1 tests included{color}.  The patch appears to include 3 new 
or modified tests.

    {color:green}+1 hadoop1.0{color}.  The patch compiles against the hadoop 
1.0 profile.

    {color:green}+1 hadoop2.0{color}.  The patch compiles against the hadoop 
2.0 profile.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any 
warning messages.

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

    {color:green}+1 findbugs{color}.  The patch does not introduce any new 
Findbugs (version 1.3.9) warnings.

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

    {color:red}-1 lineLengths{color}.  The patch introduces lines longer than 
100

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

    {color:green}+1 core tests{color}.  The patch passed unit tests in .

Test results: 
https://builds.apache.org/job/PreCommit-HBASE-Build/5993//testReport/
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/5993//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/5993//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/5993//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/5993//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop1-compat.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/5993//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/5993//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/5993//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Findbugs warnings: 
https://builds.apache.org/job/PreCommit-HBASE-Build/5993//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Console output: 
https://builds.apache.org/job/PreCommit-HBASE-Build/5993//console

This message is automatically generated.
                
> IntegrationTestBigLinkedList can fail due to random number collision
> --------------------------------------------------------------------
>
>                 Key: HBASE-8700
>                 URL: https://issues.apache.org/jira/browse/HBASE-8700
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>         Attachments: HBASE-8700-v0.patch, HBASE-8700-v1.patch
>
>
> The test can fail due to random number collision, claiming there are 
> unreferenced elements for obvious reasons (we rewrite some link). Original 
> Accumulo test has one-stage generation so it doesn't count unreferenced 
> elements as failures, only undefined ones. With 200m longs out of half-long 
> range the probability of collision is approx 0.2%.
> Moreover, without some way to debug, it's hard to debug what keys should be 
> looked at in such cases

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