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https://issues.apache.org/jira/browse/YARN-7689?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wilfred Spiegelenburg updated YARN-7689:
----------------------------------------
Attachment: YARN-7689.001.patch
> TestRMContainerAllocator fails after YARN-6124
> ----------------------------------------------
>
> Key: YARN-7689
> URL: https://issues.apache.org/jira/browse/YARN-7689
> Project: Hadoop YARN
> Issue Type: Bug
> Components: scheduler
> Affects Versions: 3.1.0
> Reporter: Wilfred Spiegelenburg
> Assignee: Wilfred Spiegelenburg
> Attachments: YARN-7689.001.patch
>
>
> After the change that was made for YARN-6124 multiple tests in the
> TestRMContainerAllocator from MapReduce fail with the following NPE:
> {code}
> java.lang.NullPointerException
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.AbstractYarnScheduler.reinitialize(AbstractYarnScheduler.java:1437)
> at
> org.apache.hadoop.yarn.server.resourcemanager.scheduler.fifo.FifoScheduler.reinitialize(FifoScheduler.java:320)
> at
> org.apache.hadoop.mapreduce.v2.app.rm.TestRMContainerAllocator$ExcessReduceContainerAllocateScheduler.<init>(TestRMContainerAllocator.java:1808)
> at
> org.apache.hadoop.mapreduce.v2.app.rm.TestRMContainerAllocator$MyResourceManager2.createScheduler(TestRMContainerAllocator.java:970)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceInit(ResourceManager.java:659)
> at
> org.apache.hadoop.service.AbstractService.init(AbstractService.java:164)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.createAndInitActiveServices(ResourceManager.java:1133)
> at
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.serviceInit(ResourceManager.java:316)
> at
> org.apache.hadoop.yarn.server.resourcemanager.MockRM.serviceInit(MockRM.java:1334)
> at
> org.apache.hadoop.service.AbstractService.init(AbstractService.java:164)
> at
> org.apache.hadoop.yarn.server.resourcemanager.MockRM.<init>(MockRM.java:162)
> at
> org.apache.hadoop.yarn.server.resourcemanager.MockRM.<init>(MockRM.java:141)
> at
> org.apache.hadoop.yarn.server.resourcemanager.MockRM.<init>(MockRM.java:137)
> at
> org.apache.hadoop.mapreduce.v2.app.rm.TestRMContainerAllocator$MyResourceManager.<init>(TestRMContainerAllocator.java:928)
> {code}
> In the test we just call reinitiaize on a scheduler and never call init.
> The stop of the service is guarded and so should the start and the re-init.
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