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https://issues.apache.org/jira/browse/YARN-2323?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14067553#comment-14067553
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Hadoop QA commented on YARN-2323:
---------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12656727/YARN-2323.patch
against trunk revision .
{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:red}-1 core tests{color}. The patch failed these unit tests in
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager:
org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServices
org.apache.hadoop.yarn.server.resourcemanager.applicationsmanager.TestAMRestart
org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesCapacitySched
org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesDelegationTokens
org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesAppsModification
org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesNodes
org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesApps
org.apache.hadoop.yarn.server.resourcemanager.webapp.TestRMWebServicesFairScheduler
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-YARN-Build/4372//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/4372//console
This message is automatically generated.
> FairShareComparator creates too much Resource object
> ----------------------------------------------------
>
> Key: YARN-2323
> URL: https://issues.apache.org/jira/browse/YARN-2323
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler
> Reporter: Hong Zhiguo
> Assignee: Hong Zhiguo
> Priority: Minor
> Attachments: YARN-2323.patch
>
>
> Each call of {{FairShareComparator}} creates a new Resource object "one":
> {code}
> Resource one = Resources.createResource(1);
> {code}
> At the volume of 1000 nodes and 1000 apps, the comparator will be called more
> than 10 million times per second, thus creating more than 10 million object
> "one", which is unnecessary.
> Since the object "one" is read-only and is never referenced outside of
> comparator, we could make it static.
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