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Posted to mapreduce-issues@hadoop.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2011/02/27 02:16:58 UTC

[jira] Commented: (MAPREDUCE-2225) MultipleOutputs should not require the use of 'Writable'

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12999858#comment-12999858 ] 

Hadoop QA commented on MAPREDUCE-2225:
--------------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12467578/multipleoutputs.nowritables.r2.diff
  against trunk revision 1074251.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 6 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit warnings.

    +1 core tests.  The patch passed core unit tests.

    -1 contrib tests.  The patch failed contrib unit tests.

    +1 system test framework.  The patch passed system test framework compile.

Test results: https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/44//testReport/
Findbugs warnings: https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/44//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://hudson.apache.org/hudson/job/PreCommit-MAPREDUCE-Build/44//console

This message is automatically generated.

> MultipleOutputs should not require the use of 'Writable'
> --------------------------------------------------------
>
>                 Key: MAPREDUCE-2225
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2225
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: job submission
>    Affects Versions: 0.20.1
>         Environment: Linux
>            Reporter: Harsh J Chouraria
>            Assignee: Harsh J Chouraria
>            Priority: Blocker
>             Fix For: 0.22.0
>
>         Attachments: multipleoutputs.nowritables.r1.diff, multipleoutputs.nowritables.r2.diff
>
>   Original Estimate: 1m
>  Remaining Estimate: 1m
>
> MultipleOutputs right now requires for Key/Value classes to utilize the Writable and WritableComparable interfaces, and fails if the associated key/value classes aren't doing so.
> With support for alternates like Avro serialization, using Writables isn't necessary and thus the MO class must not strictly check for them.
> And since comparators may be given separately, key class doesn't need to be checked for implementing a comparable (although it is good design if the key class does implement Comparable at least).
> Am not sure if this brings about an incompatible change (does Java have BIC? No idea).

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