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From "Binglin Chang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5987) native-task: Unit test TestGlibCBug fails on ubuntu
Date Fri, 25 Jul 2014 07:47:39 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5987?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14074179#comment-14074179
] 

Binglin Chang commented on MAPREDUCE-5987:
------------------------------------------

bq. memcpy seems to perform better memmov
Yes, so we should use memcpy when we can make sure src & dest are not overlap, but in
fillGet memmove should be used, whether or not GlibCBug exists. 
 

> native-task: Unit test TestGlibCBug fails on ubuntu
> ---------------------------------------------------
>
>                 Key: MAPREDUCE-5987
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5987
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>          Components: task
>            Reporter: Sean Zhong
>            Assignee: Sean Zhong
>            Priority: Minor
>
> On  ubuntu12, glibc: 2.15-0ubuntu10.3, UT TestGlibCBug fails
> [ RUN      ] IFile.TestGlibCBug
> 14/07/21 15:55:30 INFO TestGlibCBug ./testData/testGlibCBugSpill.out
> /home/decster/projects/hadoop-trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-nativetask/src/main/native/test/TestIFile.cc:186:
Failure
> Value of: realKey
>   Actual: 1127504685
> Expected: expect[index]
> Which is: 4102672832
> [  FAILED  ] IFile.TestGlibCBug (0 ms)
> [----------] 2 tests from IFile (240 ms total)



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