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Type:
Improvement
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Status: Resolved
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Priority:
Major
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Resolution: Fixed
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Affects Version/s: 2.8.0
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Fix Version/s: 2.8.0, 3.0.0-alpha1
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Component/s: fairscheduler
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Labels:None
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Target Version/s:
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Hadoop Flags:Incompatible change, Reviewed
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Release Note:
When assignMultiple is turned on, today the number of containers allocated to node within a single heartbeat is determined by maxAssign. Picking a higher value for this prevents the spreading of the workload, and a smaller number leads to slow ramp up.
The proposal is to make it dynamic - half of the unallocated resources on the node.
- incorporates
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YARN-4981 limit the max containers to assign to one application per heartbeart
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- Resolved
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