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https://issues.apache.org/jira/browse/MAPREDUCE-3376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13159948#comment-13159948
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Hadoop QA commented on MAPREDUCE-3376:
--------------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12505595/MAPREDUCE-3376.patch
against trunk revision .
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
-1 javac. The applied patch generated 1836 javac compiler warnings (more
than the trunk's current 1826 warnings).
-1 findbugs. The patch appears to introduce 12 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 failed these unit tests:
org.apache.hadoop.mapreduce.v2.TestMRJobsWithHistoryService
org.apache.hadoop.mapred.TestMiniMRClientCluster
org.apache.hadoop.mapreduce.v2.TestUberAM
org.apache.hadoop.mapred.TestClientRedirect
+1 contrib tests. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1366//testReport/
Findbugs warnings:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1366//artifact/trunk/hadoop-mapreduce-project/patchprocess/newPatchFindbugsWarningshadoop-mapreduce-examples.html
Console output:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/1366//console
This message is automatically generated.
> 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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