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https://issues.apache.org/jira/browse/MAPREDUCE-4487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438130#comment-13438130
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Hadoop QA commented on MAPREDUCE-4487:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12541623/MAPREDUCE-4487-mr2.patch
against trunk revision .
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 1 new or modified test
files.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 eclipse:eclipse. The patch built with eclipse:eclipse.
+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 failed these unit tests in
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient:
org.apache.hadoop.mapreduce.v2.app.TestRecovery
org.apache.hadoop.mapreduce.lib.input.TestCombineFileInputFormat
+1 contrib tests. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2750//testReport/
Console output:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/2750//console
This message is automatically generated.
> Reduce job latency by removing hardcoded sleep statements
> ---------------------------------------------------------
>
> Key: MAPREDUCE-4487
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4487
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv1, mrv2, performance
> Affects Versions: 1.0.3, 2.0.0-alpha
> Reporter: Tom White
> Assignee: Tom White
> Attachments: MAPREDUCE-4487-mr2.patch, MAPREDUCE-4487.patch
>
>
> There are a few places in MapReduce where there are hardcoded sleep
> statements. By replacing them with wait/notify or similar it's possible to
> reduce latency for short running jobs.
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