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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1290) Let continuous scheduling achieve more balanced task assignment
Date Tue, 15 Oct 2013 00:18:42 GMT

    [ https://issues.apache.org/jira/browse/YARN-1290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13794686#comment-13794686
] 

Hadoop QA commented on YARN-1290:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12608384/YARN-1290.patch
  against trunk revision .

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

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

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

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

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

    {color:red}-1 findbugs{color}.  The patch appears to introduce 2 new Findbugs (version
1.3.9) 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.

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/2174//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-YARN-Build/2174//artifact/trunk/patchprocess/newPatchFindbugsWarningshadoop-yarn-server-resourcemanager.html
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/2174//console

This message is automatically generated.

> Let continuous scheduling achieve more balanced task assignment
> ---------------------------------------------------------------
>
>                 Key: YARN-1290
>                 URL: https://issues.apache.org/jira/browse/YARN-1290
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Wei Yan
>            Assignee: Wei Yan
>         Attachments: main.pdf, YARN-1290.patch, YARN-1290.patch
>
>
> Currently, in continuous scheduling (YARN-1010), in each round, the thread iterates over
pre-ordered nodes and assigns tasks. This mechanism may overload the first several nodes,
while the latter nodes have no tasks.
> We should sort all nodes according to available resource. In each round, always assign
tasks to nodes with larger capacity, which can balance the load distribution among all nodes.



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