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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-3952) In MR2, when Total input paths to process == 1, CombinefileInputFormat.getSplits() returns 0 split.
Date Tue, 06 Mar 2012 13:24:58 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13223237#comment-13223237
] 

Hudson commented on MAPREDUCE-3952:
-----------------------------------

Integrated in Hadoop-Mapreduce-0.23-Build #217 (See [https://builds.apache.org/job/Hadoop-Mapreduce-0.23-Build/217/])
    Merge -r 1297292:1297293 from trunk to branch. FIXES: MAPREDUCE-3952 (Revision 1297299)

     Result = FAILURE
tucu : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1297299
Files : 
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/CHANGES.txt
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.java
* /hadoop/common/branches/branch-0.23/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/input/TestCombineFileInputFormat.java

                
> In MR2, when Total input paths to process == 1, CombinefileInputFormat.getSplits() returns
0 split.
> ---------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3952
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3952
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv2
>    Affects Versions: 0.24.0, 0.23.3
>            Reporter: Zhenxiao Luo
>            Assignee: Bhallamudi Venkata Siva Kamesh
>             Fix For: 0.23.3
>
>         Attachments: MAPREDUCE-3952-1.patch, MAPREDUCE-3952.patch
>
>
> Hive get unexpected result when using MR2(When using MR1, always get expected result).
> In MR2, when Total input paths to process == 1, CombinefileInputFormat.getSplits() returns
0 split.
> The calling code in Hive, in Hadoop23Shims.java:
> InputSplit[] splits = super.getSplits(job, numSplits);
> this get splits.length == 0.
> In MR1, everything goes fine, the calling code in Hive, in Hadoop20Shims.java:
> CombineFileSplit[] splits = (CombineFileSplit[]) super.getSplits(job, numSplits);
> this get splits.length == 1.

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