Hu Ziqian created YARN-8743:
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Summary: capacity scheduler doesn't set node label to reserved
container
Key: YARN-8743
URL: https://issues.apache.org/jira/browse/YARN-8743
Project: Hadoop YARN
Issue Type: Bug
Components: capacity scheduler, scheduler preemption
Reporter: Hu Ziqian
capacity scheduler doesn't set node label when new a reserved container's
RMContainerImpl and when allocate this container, leafQueue will treat it as a
ignorePartitionExclusivityRMContainer.
This bug will cause preempt failure. When preempt happens, the preemption
policy will try to preempt the reserved container while leafQueue doesn't
remove it from ignorePartitionExclusivityRMContainers. In our cluster, we found
that preemption policy will always try to preempt the reserved container and
actually preempt nothing.
We set the node label information to reserved container's RMContainerImpl and
redo our test. The preemption performs as expected.
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