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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6622) Add capability to set JHS job cache to a task-based limit
Date Tue, 23 Feb 2016 00:26:18 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6622?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15158010#comment-15158010
] 

Hadoop QA commented on MAPREDUCE-6622:
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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 16s {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}
Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 7m 47s {color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m 16s {color} |
{color:green} trunk passed with JDK v1.8.0_72 {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m 1s {color} | {color:green}
trunk passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 25s {color}
| {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m 25s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 39s {color}
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| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 2m 32s {color} |
{color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 15s {color} |
{color:green} trunk passed with JDK v1.8.0_72 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 10s {color} |
{color:green} trunk passed with JDK v1.7.0_95 {color} |
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m 10s {color} | {color:blue}
Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m 11s {color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m 13s {color} |
{color:green} the patch passed with JDK v1.8.0_72 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 2m 13s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m 0s {color} | {color:green}
the patch passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 2m 0s {color} | {color:green}
the patch passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 24s {color}
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| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m 19s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 34s {color}
| {color:green} the patch passed {color} |
| {color:red}-1{color} | {color:red} whitespace {color} | {color:red} 0m 0s {color} | {color:red}
The patch has 2 line(s) that end in whitespace. Use git apply --whitespace=fix. {color} |
| {color:green}+1{color} | {color:green} xml {color} | {color:green} 0m 1s {color} | {color:green}
The patch has no ill-formed XML file. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 3m 16s {color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 8s {color} | {color:green}
the patch passed with JDK v1.8.0_72 {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m 7s {color} | {color:green}
the patch passed with JDK v1.7.0_95 {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 2m 26s {color} | {color:green}
hadoop-mapreduce-client-core in the patch passed with JDK v1.8.0_72. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 52s {color} | {color:green}
hadoop-mapreduce-client-common in the patch passed with JDK v1.8.0_72. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 6m 29s {color} | {color:green}
hadoop-mapreduce-client-hs in the patch passed with JDK v1.8.0_72. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 2m 24s {color} | {color:green}
hadoop-mapreduce-client-core in the patch passed with JDK v1.7.0_95. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 0m 51s {color} | {color:green}
hadoop-mapreduce-client-common in the patch passed with JDK v1.7.0_95. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 6m 13s {color} | {color:green}
hadoop-mapreduce-client-hs in the patch passed with JDK v1.7.0_95. {color} |
| {color:red}-1{color} | {color:red} asflicense {color} | {color:red} 0m 21s {color} | {color:red}
Patch generated 14 ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 54m 18s {color} | {color:black}
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|| Subsystem || Report/Notes ||
| Docker |  Image:yetus/hadoop:0ca8df7 |
| JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12789079/MAPREDUCE-6622.004.patch
|
| JIRA Issue | MAPREDUCE-6622 |
| Optional Tests |  asflicense  compile  javac  javadoc  mvninstall  mvnsite  unit  findbugs
 checkstyle  xml  |
| uname | Linux 576b1d5b719f 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 / 66289a3 |
| Default Java | 1.7.0_95 |
| Multi-JDK versions |  /usr/lib/jvm/java-8-oracle:1.8.0_72 /usr/lib/jvm/java-7-openjdk-amd64:1.7.0_95
|
| findbugs | v3.0.0 |
| whitespace | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6341/artifact/patchprocess/whitespace-eol.txt
|
| JDK v1.7.0_95  Test Results | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6341/testReport/
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| asflicense | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6341/artifact/patchprocess/patch-asflicense-problems.txt
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| modules | C:  hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core
  hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-common   hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-hs
 U: hadoop-mapreduce-project/hadoop-mapreduce-client |
| Console output | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/6341/console |
| Powered by | Apache Yetus 0.2.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Add capability to set JHS job cache to a task-based limit
> ---------------------------------------------------------
>
>                 Key: MAPREDUCE-6622
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6622
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: jobhistoryserver
>    Affects Versions: 2.7.2
>            Reporter: Ray Chiang
>            Assignee: Ray Chiang
>              Labels: supportability
>         Attachments: MAPREDUCE-6622.001.patch, MAPREDUCE-6622.002.patch, MAPREDUCE-6622.003.patch,
MAPREDUCE-6622.004.patch
>
>
> When setting the property mapreduce.jobhistory.loadedjobs.cache.size the jobs can be
of varying size.  This is generally not a problem when the jobs sizes are uniform or small,
but when the job sizes can be very large (say greater than 250k tasks), then the JHS heap
size can grow tremendously.
> In cases, where multiple jobs are very large, then the JHS can lock up and spend all
its time in GC.  However, since the cache is holding on to all the jobs, not much heap space
can be freed up.
> By setting a property that sets a cap on the number of tasks allowed in the cache and
since the total number of tasks loaded is directly proportional to the amount of heap used,
this should help prevent the JHS from locking up.



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