[jira] [Commented] (MAPREDUCE-3384) Add warning message for org.apache.hadoop.mapreduce.lib.reduce.LongSumReducer

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-3384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14576955#comment-14576955 ] 

Hadoop QA commented on MAPREDUCE-3384:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  15m 59s | Pre-patch trunk compilation is healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any @author tags. |
| {color:red}-1{color} | tests included |   0m  0s | The patch doesn't appear to include any new or modified tests.  Please justify why no new tests are needed for this patch. Also please list what manual steps were performed to verify this patch. |
| {color:green}+1{color} | javac |   7m 30s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |   9m 31s | There were no new javadoc warning messages. |
| {color:green}+1{color} | release audit |   0m 23s | The applied patch does not increase the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle |   0m 46s | There were no new checkstyle issues. |
| {color:red}-1{color} | whitespace |   0m  0s | The patch has 3  line(s) that end in whitespace. Use git apply --whitespace=fix. |
| {color:green}+1{color} | install |   1m 33s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 33s | The patch built with eclipse:eclipse. |
| {color:red}-1{color} | findbugs |   1m 28s | The patch appears to introduce 1 new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | mapreduce tests |   1m 36s | Tests passed in hadoop-mapreduce-client-core. |
| | |  39m 24s | |
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|| Reason || Tests ||
| FindBugs | module:hadoop-mapreduce-client-core |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12738317/MAPREDUCE-3384-002.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / c7ee6c1 |
| whitespace | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5781/artifact/patchprocess/whitespace.txt |
| Findbugs warnings | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5781/artifact/patchprocess/newPatchFindbugsWarningshadoop-mapreduce-client-core.html |
| hadoop-mapreduce-client-core test log | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5781/artifact/patchprocess/testrun_hadoop-mapreduce-client-core.txt |
| Test Results | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5781/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf909.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/5781/console |


This message was automatically generated.

> Add warning message for org.apache.hadoop.mapreduce.lib.reduce.LongSumReducer
> -----------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-3384
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3384
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: JiangKai
>            Assignee: Brahma Reddy Battula
>         Attachments: MAPREDUCE-3384-002.patch, MAPREDUCE-3384.patch
>
>
> When we call the function reduce() of LongSumReducer,the result may overflow.
> We should send a warning message to users if overflow occurs.



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