Details
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Sub-task
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Status: Closed
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Major
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Resolution: Fixed
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Description
Yarn enforces these two checks:
1. ANY_HOST requests should always be made with relax-locality = true
2. A request with relax-locality = false should not be in the same priority as another with relax-locality = true
Since the Samza AM makes preferred-host requests with relax-locality = false, it follows that ANY_HOST requests should specify a different priority-level. We can safely set priority of preferred-host requests to be higher than any-host requests since data-locality is critical.
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