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https://issues.apache.org/jira/browse/YARN-2124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14027333#comment-14027333
]
Hadoop QA commented on YARN-2124:
---------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12649717/YARN-2124.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 2 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}. 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 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/3955//testReport/
Console output: https://builds.apache.org/job/PreCommit-YARN-Build/3955//console
This message is automatically generated.
> ProportionalCapacityPreemptionPolicy cannot work because it's initialized
> before scheduler initialized
> ------------------------------------------------------------------------------------------------------
>
> Key: YARN-2124
> URL: https://issues.apache.org/jira/browse/YARN-2124
> Project: Hadoop YARN
> Issue Type: Bug
> Components: resourcemanager, scheduler
> Affects Versions: 3.0.0
> Reporter: Wangda Tan
> Assignee: Wangda Tan
> Priority: Critical
> Attachments: YARN-2124.patch, YARN-2124.patch
>
>
> When I play with scheduler with preemption, I found
> ProportionalCapacityPreemptionPolicy cannot work. NPE will be raised when RM
> start
> {code}
> 2014-06-05 11:01:33,201 ERROR
> org.apache.hadoop.yarn.YarnUncaughtExceptionHandler: Thread
> Thread[SchedulingMonitor (ProportionalCapacityPreemptionPolicy),5,main] threw
> an Exception.
> java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.util.resource.Resources.greaterThan(Resources.java:225)
> at
> org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.ProportionalCapacityPreemptionPolicy.computeIdealResourceDistribution(ProportionalCapacityPreemptionPolicy.java:302)
> at
> org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.ProportionalCapacityPreemptionPolicy.recursivelyComputeIdealAssignment(ProportionalCapacityPreemptionPolicy.java:261)
> at
> org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.ProportionalCapacityPreemptionPolicy.containerBasedPreemptOrKill(ProportionalCapacityPreemptionPolicy.java:198)
> at
> org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.ProportionalCapacityPreemptionPolicy.editSchedule(ProportionalCapacityPreemptionPolicy.java:174)
> at
> org.apache.hadoop.yarn.server.resourcemanager.monitor.SchedulingMonitor.invokePolicy(SchedulingMonitor.java:72)
> at
> org.apache.hadoop.yarn.server.resourcemanager.monitor.SchedulingMonitor$PreemptionChecker.run(SchedulingMonitor.java:82)
> at java.lang.Thread.run(Thread.java:744)
> {code}
> This is caused by ProportionalCapacityPreemptionPolicy needs
> ResourceCalculator from CapacityScheduler. But
> ProportionalCapacityPreemptionPolicy get initialized before CapacityScheduler
> initialized. So ResourceCalculator will set to null in
> ProportionalCapacityPreemptionPolicy.
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