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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2632) Avoid calling the partitioner when the numReduceTasks is 1.
Date Fri, 08 May 2015 18:30:01 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2632?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14535181#comment-14535181
] 

Hadoop QA commented on MAPREDUCE-2632:
--------------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  14m 55s | Pre-patch trunk compilation is healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any @author tags.
|
| {color:green}+1{color} | tests included |   0m  0s | The patch appears to include 2 new
or modified test files. |
| {color:green}+1{color} | javac |   7m 43s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |   9m 43s | There were no new javadoc warning messages.
|
| {color:red}-1{color} | release audit |   0m 20s | The applied patch generated 2 release
audit warnings. |
| {color:green}+1{color} | checkstyle |   0m 49s | There were no new checkstyle issues. |
| {color:red}-1{color} | whitespace |   0m  0s | The patch has 2  line(s) that end in whitespace.
Use git apply --whitespace=fix. |
| {color:green}+1{color} | install |   1m 36s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with eclipse:eclipse.
|
| {color:green}+1{color} | findbugs |   1m 15s | The patch does not introduce any new Findbugs
(version 2.0.3) warnings. |
| {color:green}+1{color} | mapreduce tests |   1m 36s | Tests passed in hadoop-mapreduce-client-core.
|
| | |  38m 34s | |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12731508/mr-2632-3.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 3cefc02 |
| Release Audit | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5677/artifact/patchprocess/patchReleaseAuditProblems.txt
|
| whitespace | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5677/artifact/patchprocess/whitespace.txt
|
| hadoop-mapreduce-client-core test log | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5677/artifact/patchprocess/testrun_hadoop-mapreduce-client-core.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5677/testReport/
|
| Java | 1.7.0_55 |
| uname | Linux asf904.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep
3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Console output | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5677/console |


This message was automatically generated.

> Avoid calling the partitioner when the numReduceTasks is 1.
> -----------------------------------------------------------
>
>                 Key: MAPREDUCE-2632
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2632
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>    Affects Versions: 0.23.0
>            Reporter: Ravi Teja Ch N V
>            Assignee: Sunil G
>         Attachments: 0001-MAPREDUCE-2632.patch, MAPREDUCE-2632-1.patch, MAPREDUCE-2632.patch,
mr-2632-2.patch, mr-2632-3.patch
>
>
> We can avoid the call to the partitioner when the number of reducers is 1.This will avoid
the unnecessary computations by the partitioner.



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