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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6870) Add configuration for MR job to finish when all reducers are complete (even with unfinished mappers)
Date Wed, 05 Jul 2017 15:58:00 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16074994#comment-16074994
] 

Hadoop QA commented on MAPREDUCE-6870:
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 17s{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:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m  0s{color}
| {color:green} The patch appears to include 1 new or modified test files. {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m 10s{color} | {color:blue}
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| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 16m 26s{color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  2m 21s{color} |
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| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 33s{color}
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| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  9s{color} |
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| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 38s{color}
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| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  1m 41s{color} |
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| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 42s{color} |
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| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue}  0m  9s{color} | {color:blue}
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| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 59s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  2m 14s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  2m 14s{color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 31s{color}
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| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  1m  5s{color} |
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| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green}  0m 38s{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}  2m 16s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 45s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}  3m 29s{color} | {color:green}
hadoop-mapreduce-client-core in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 11m 30s{color} | {color:green}
hadoop-mapreduce-client-app in the patch passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 23s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 49m  1s{color} | {color:black}
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:14b5c93 |
| JIRA Issue | MAPREDUCE-6870 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12875773/MAPREDUCE-6870-002.patch
|
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  findbugs
 checkstyle  |
| uname | Linux b3d8b3efa3b2 4.4.0-43-generic #63-Ubuntu SMP Wed Oct 12 13:48:03 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / a180ba4 |
| Default Java | 1.8.0_131 |
| findbugs | v3.1.0-RC1 |
|  Test Results | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7017/testReport/
|
| modules | C: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app U: hadoop-mapreduce-project/hadoop-mapreduce-client
|
| Console output | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7017/console |
| Powered by | Apache Yetus 0.4.0   http://yetus.apache.org |


This message was automatically generated.



> Add configuration for MR job to finish when all reducers are complete (even with unfinished
mappers)
> ----------------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-6870
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6870
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>    Affects Versions: 2.6.1
>            Reporter: Zhe Zhang
>            Assignee: Peter Bacsko
>         Attachments: MAPREDUCE-6870-001.patch, MAPREDUCE-6870-002.patch
>
>
> Even with MAPREDUCE-5817, there could still be cases where mappers get scheduled before
all reducers are complete, but those mappers run for long time, even after all reducers are
complete. This could hurt the performance of large MR jobs.
> In some cases, mappers don't have any materialize-able outcome other than providing intermediate
data to reducers. In that case, the job owner should have the config option to finish the
job once all reducers are complete.



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