Xintong Song created YARN-8528:
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Summary: ContainerAllocation.state should be private and
unchangeable
Key: YARN-8528
URL: https://issues.apache.org/jira/browse/YARN-8528
Project: Hadoop YARN
Issue Type: Bug
Components: capacity scheduler
Reporter: Xintong Song
ContainerAllocation.LOCALITY_SKIPPED is final static, and its .state should
always be AllocationState.LOCALITY_SKIPPED. However, this variable is public
and is accidentally changed to AllocationState.APP_SKIPPED in
RegularContainerAllocator. The consequences are codes using
ContainerAllocation.LOCALITY_SKIPPED and expecting
AllocationState.LOCALITY_SKIPPED are actually getting
AllocationState.APP_SKIPPED.
Similar risks exist for
ContainerAllocation.PRIORITY_SKIPPED/APP_SKIPPED/QUEUE_SKIPPED.
ContainerAllocation.state should be private and should not be changed. If
changes are needed, a new ContainerAllocation should be created.
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