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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6757) Multithreaded mapper corrupts buffer pusher in nativetask
Date Tue, 16 Aug 2016 10:23:20 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6757?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15422558#comment-15422558
] 

Hadoop QA commented on MAPREDUCE-6757:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 22s {color} | {color:blue}
Docker mode activated. {color} |
| {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s {color} | {color:green}
The patch does not contain any @author tags. {color} |
| {color:red}-1{color} | {color:red} test4tests {color} | {color:red} 0m 0s {color} | {color:red}
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} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 7m 38s {color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 38s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 13s {color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 19s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 13s {color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m 22s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 13s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 14s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 34s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 34s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 9s {color}
| {color:green} hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-nativetask:
The patch generated 0 new + 20 unchanged - 1 fixed = 20 total (was 21) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 16s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 10s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m 0s {color}
| {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m 26s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 10s {color} |
{color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 0m 51s {color} | {color:red}
hadoop-mapreduce-client-nativetask in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 17s {color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 13m 45s {color} | {color:black}
{color} |
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:9560f25 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12823862/MAPREDUCE-6757.0000.patch
|
| JIRA Issue | MAPREDUCE-6757 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  findbugs
 checkstyle  |
| uname | Linux a4b190d4d453 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 |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / ffe1fff |
| Default Java | 1.8.0_101 |
| findbugs | v3.0.0 |
| unit | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6672/artifact/patchprocess/patch-unit-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-nativetask.txt
|
|  Test Results | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6672/testReport/
|
| modules | C: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-nativetask
U: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-nativetask |
| Console output | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6672/console |
| Powered by | Apache Yetus 0.3.0   http://yetus.apache.org |


This message was automatically generated.



> Multithreaded mapper corrupts buffer pusher in nativetask
> ---------------------------------------------------------
>
>                 Key: MAPREDUCE-6757
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6757
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: nativetask
>    Affects Versions: 3.0.0-alpha1
>            Reporter: He Tianyi
>         Attachments: MAPREDUCE-6757.0000.patch
>
>
> Multiple threads could be calling {{collect}} method of the same {{NativeMapOutputCollectorDelegator}}
instance at the same time. In this case, buffer can be corrupted.
> This may occur when executing Hive queries with custom script.
> Adding 'synchronized' keyword to {{collect}} method would solve the problem.



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