[jira] [Commented] (YARN-3487) CapacityScheduler scheduler lock obtained unnecessarily

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

    [ https://issues.apache.org/jira/browse/YARN-3487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14495095#comment-14495095 ] 

Hadoop QA commented on YARN-3487:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12725395/YARN-3487.001.patch
  against trunk revision 05007b4.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  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 javac{color}.  The applied patch does not increase the total number of javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version 2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number of release audit warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager.

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/7334//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/7334//console

This message is automatically generated.

> CapacityScheduler scheduler lock obtained unnecessarily
> -------------------------------------------------------
>
>                 Key: YARN-3487
>                 URL: https://issues.apache.org/jira/browse/YARN-3487
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 2.6.0
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Critical
>         Attachments: YARN-3487.001.patch, YARN-3487.002.patch
>
>
> Recently saw a significant slowdown of applications on a large cluster, and we noticed there were a large number of blocked threads on the RM.  Most of the blocked threads were waiting for the CapacityScheduler lock while calling getQueueInfo.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)