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https://issues.apache.org/jira/browse/YARN-547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13630766#comment-13630766
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Hadoop QA commented on YARN-547:
--------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12578544/yarn-547-20130412.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:green}+1 findbugs{color}. The patch does not introduce any 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:red}-1 core tests{color}. The patch failed these unit tests in
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager:
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.TestLocalResourcesTrackerImpl
org.apache.hadoop.yarn.server.nodemanager.containermanager.localizer.TestLocalizedResource
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-YARN-Build/731//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/731//console
This message is automatically generated.
> New resource localization is tried even when Localized Resource is in
> DOWNLOADING state
> ---------------------------------------------------------------------------------------
>
> Key: YARN-547
> URL: https://issues.apache.org/jira/browse/YARN-547
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Omkar Vinit Joshi
> Assignee: Omkar Vinit Joshi
> Attachments: yarn-547-20130411.1.patch, yarn-547-20130411.patch,
> yarn-547-20130412.patch
>
>
> At present when multiple containers try to request a localized resource
> 1) If the resource is not present then first it is created and Resource
> Localization starts ( LocalizedResource is in DOWNLOADING state)
> 2) Now if in this state multiple ResourceRequestEvents come in then
> ResourceLocalizationEvents are fired for all of them.
> Most of the times it is not resulting into a duplicate resource download but
> there is a race condition present there.
> Location : ResourceLocalizationService.addResource .. addition of the request
> into "attempts" in case of an event already exists.
> The root cause for this is the presence of FetchResourceTransition on
> receiving ResourceRequestEvent in DOWNLOADING state.
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