Defining a Queue Label Policy
A queue label policy determines whether an application label or a queue label prevails when there is a conflict between the two. For YARN applications, you can set the following queue label policies:
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PREFER_QUEUE — always use label set on queue
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PREFER_APP — always use label set on application
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AND (default) — application label AND queue label
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OR — application label OR queue label
See the following sections for directions on setting the queue label policy for Fair Scheduler and Capacity Scheduler.