[jira] [Commented] (MAPREDUCE-6473) Job submission can take a long time during Cluster initialization

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

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14744208#comment-14744208 ] 

Hadoop QA commented on MAPREDUCE-6473:
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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  20m 39s | 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 |  10m  0s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |  15m 27s | There were no new javadoc warning messages. |
| {color:green}+1{color} | release audit |   0m 44s | The applied patch does not increase the total number of release audit warnings. |
| {color:red}-1{color} | checkstyle |   1m 19s | The applied patch generated  23 new checkstyle issues (total was 15, now 38). |
| {color:green}+1{color} | whitespace |   0m  0s | The patch has no lines that end in whitespace. |
| {color:green}+1{color} | install |   2m 16s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 38s | The patch built with eclipse:eclipse. |
| {color:green}+1{color} | findbugs |   1m 41s | The patch does not introduce any new Findbugs (version 3.0.0) warnings. |
| {color:green}+1{color} | mapreduce tests |   2m  3s | Tests passed in hadoop-mapreduce-client-core. |
| | |  54m 51s | |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12755512/MAPREDUCE-6473-v1.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 6955771 |
| checkstyle |  https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5988/artifact/patchprocess/diffcheckstylehadoop-mapreduce-client-core.txt |
| hadoop-mapreduce-client-core test log | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5988/artifact/patchprocess/testrun_hadoop-mapreduce-client-core.txt |
| Test Results | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/5988/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf906.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/5988/console |


This message was automatically generated.

> Job submission can take a long time during Cluster initialization
> -----------------------------------------------------------------
>
>                 Key: MAPREDUCE-6473
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6473
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: performance
>            Reporter: Kuhu Shukla
>            Assignee: Kuhu Shukla
>         Attachments: 99%ile.png, MAPREDUCE-6473-PerfTest.txt, MAPREDUCE-6473-v1.patch, avgtime.png
>
>
> During initialization in Cluster.java, the framework provider classes are loaded inside a sync block which can considerably increase job submission time when the number of submissions are high. The motive is to reduce time spent in this sync block safely to improve performance.
> {noformat}
> synchronized (frameworkLoader) {
>       for (ClientProtocolProvider provider : frameworkLoader) {
>         LOG.debug("Trying ClientProtocolProvider : "
>             + provider.getClass().getName());
> {noformat}



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