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https://issues.apache.org/jira/browse/YARN-2453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14112435#comment-14112435
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zhihai xu commented on YARN-2453:
---------------------------------
[~eepayne] Because the default scheduler used in trunk and branch-2 is
CapacityScheduler. You won't see this problem unless you change the scheduler
default setting to FaireScheduler or you manually set the scheduler to
FaireScheduler.
> TestProportionalCapacityPreemptionPolicy is failed for FairScheduler
> --------------------------------------------------------------------
>
> Key: YARN-2453
> URL: https://issues.apache.org/jira/browse/YARN-2453
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: zhihai xu
> Assignee: zhihai xu
> Attachments: YARN-2453.000.patch
>
>
> TestProportionalCapacityPreemptionPolicy is failed for FairScheduler.
> The following is error message:
> Running
> org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.TestProportionalCapacityPreemptionPolicy
> Tests run: 18, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 3.94 sec <<<
> FAILURE! - in
> org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.TestProportionalCapacityPreemptionPolicy
> testPolicyInitializeAfterSchedulerInitialized(org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.TestProportionalCapacityPreemptionPolicy)
> Time elapsed: 1.61 sec <<< FAILURE!
> java.lang.AssertionError: Failed to find SchedulingMonitor service, please
> check what happened
> at org.junit.Assert.fail(Assert.java:88)
> at
> org.apache.hadoop.yarn.server.resourcemanager.monitor.capacity.TestProportionalCapacityPreemptionPolicy.testPolicyInitializeAfterSchedulerInitialized(TestProportionalCapacityPreemptionPolicy.java:469)
> This test should only work for capacity scheduler because the following
> source code in ResourceManager.java prove it will only work for capacity
> scheduler.
> {code}
> if (scheduler instanceof PreemptableResourceScheduler
> && conf.getBoolean(YarnConfiguration.RM_SCHEDULER_ENABLE_MONITORS,
> YarnConfiguration.DEFAULT_RM_SCHEDULER_ENABLE_MONITORS)) {
> {code}
> Because CapacityScheduler is instance of PreemptableResourceScheduler and
> FairScheduler is not instance of PreemptableResourceScheduler.
> I will upload a patch to fix this issue.
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