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https://issues.apache.org/jira/browse/MAPREDUCE-3376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13161602#comment-13161602
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Subroto Sanyal commented on MAPREDUCE-3376:
-------------------------------------------
@Mahadev
executed:
./dev-support/test-patch.sh /home/subroto/Desktop/MAPREDUCE-3376.patch
--run-tests >> /tmp/patchTest.log
Following is the result for test cases:
{noformat}
-1 core tests. The patch failed these unit tests:
org.apache.hadoop.fs.TestLocalDirAllocator
org.apache.hadoop.io.retry.TestFailoverProxy
org.apache.hadoop.fs.TestFileUtil
org.apache.hadoop.fs.viewfs.TestViewFsTrash
org.apache.hadoop.fs.viewfs.TestFSMainOperationsLocalFileSystem
org.apache.hadoop.fs.TestFSMainOperationsLocalFileSystem
{noformat}
The failed testcases are not at all related to patch. May be some env issue.
The patch doesn't break any mapred functionality
> Old mapred API combiner uses NULL reporter
> ------------------------------------------
>
> Key: MAPREDUCE-3376
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-3376
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv1, mrv2
> Affects Versions: 0.20.205.0, 0.23.0, 0.24.0
> Reporter: Robert Joseph Evans
> Assignee: Subroto Sanyal
> Fix For: 0.23.1
>
> Attachments: MAPREDUCE-3376.patch
>
>
> The OldCombinerRunner class inside Task.java uses a NULL Reporter. If the
> combiner code runs for an extended period of time, even with reporting
> progress as it should, the map task can timeout and be killed. It appears
> that the NewCombinerRunner class uses a valid reporter and as such is not
> impacted by this bug.
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