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From "Jerry He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-17869) UnsafeAvailChecker wrongly returns false on ppc
Date Thu, 06 Apr 2017 23:28:41 GMT

    [ https://issues.apache.org/jira/browse/HBASE-17869?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15959964#comment-15959964
] 

Jerry He commented on HBASE-17869:
----------------------------------

Pushed to master and branch-1. (Fixed Ted's nit.)
Tested on ppc64le: 
Without the patch:
{code}
Failed tests:
  TestFuzzyRowAndColumnRangeFilter.Test:134->runTest:157->runScanner:186 expected:<10>
but was:<0>
  TestFuzzyRowFilter.testSatisfiesForward:81 expected:<YES> but was:<NO_NEXT>
  TestFuzzyRowFilter.testSatisfiesReverse:121 expected:<YES> but was:<NEXT_EXISTS>
  TestFuzzyRowFilterEndToEnd.testEndToEnd:247->runTest1:278->runScanner:343 expected:<6250>
but was:<0>
  TestFuzzyRowFilterEndToEnd.testFilterList:385->runTest:417->runScanner:445 expected:<5>
but was:<0>
  TestFuzzyRowFilterEndToEnd.testHBASE14782:204 expected:<6> but was:<0>
{code}
With the patch,  the full 'mvn clean test' is clean on master :-)

Thanks for the review.

> UnsafeAvailChecker wrongly returns false on ppc
> -----------------------------------------------
>
>                 Key: HBASE-17869
>                 URL: https://issues.apache.org/jira/browse/HBASE-17869
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 1.2.4
>            Reporter: Jerry He
>            Assignee: Jerry He
>            Priority: Minor
>             Fix For: 2.0.0, 1.4.0
>
>         Attachments: HBASE-17869.patch
>
>
> On ppc64 arch,  java.nio.Bits.unaligned() wrongly returns false due to a JDK bug.
> https://bugs.openjdk.java.net/browse/JDK-8165231
> This causes some problem for HBase. i.e. FuzzyRowFilter test fails.
> Fix it by providing a hard-code workaround for the JDK bug.



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