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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2726) CapacityScheduler should explicitly log when an accessible label has no capacity
Date Thu, 23 Oct 2014 21:39:34 GMT

    [ https://issues.apache.org/jira/browse/YARN-2726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14182018#comment-14182018

Hadoop QA commented on YARN-2726:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision d71d40a.

    {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
                        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:red}-1 core tests{color}.  The following test timeouts occurred in hadoop-hdfs-project/hadoop-hdfs:


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

Test results: https://builds.apache.org/job/PreCommit-YARN-Build/5519//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/5519//console

This message is automatically generated.

> CapacityScheduler should explicitly log when an accessible label has no capacity
> --------------------------------------------------------------------------------
>                 Key: YARN-2726
>                 URL: https://issues.apache.org/jira/browse/YARN-2726
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacityscheduler
>            Reporter: Phil D'Amore
>            Assignee: Wangda Tan
>            Priority: Minor
>         Attachments: YARN-2726-20141023-1.patch
> Given:
> - Node label defined: test-label
> - Two queues defined: a, b
> - label accessibility and and capacity defined as follows (properties abbreviated for
> root.a.accessible-node-labels = test-label
> root.a.accessible-node-labels.test-label.capacity = 100
> If you restart the RM or do a 'rmadmin -refreshQueues' you will get a stack trace with
the following error buried within:
> "Illegal capacity of -1.0 for label=test-label in queue=root.b"
> This of course occurs because test-label is accessible to b due to inheritance from the
root, and -1 is the UNDEFINED value.  To my mind this might not be obvious to the admin, and
the error message which results does not help guide someone to the source of the issue.
> I propose that this situation be updated so that when the capacity on an accessible label
is undefined, it is explicitly called out instead of falling through to the illegal capacity
check.  Something like:
> {code}
> if (capacity == UNDEFINED) {
>     throw new IllegalArgumentException("Configuration issue: " + " label=" + label +
" is accessible from queue=" + queue + " but has no capacity set.");
> }
> {code}
> I'll leave it to better judgement than mine as to whether I'm throwing the appropriate
exception there.  I think this check should be added to both getNodeLabelCapacities and getMaximumNodeLabelCapacities
in CapacitySchedulerConfiguration.java.

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