Bibin A Chundatt created YARN-4362:
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Summary: Too many preemption activity when nodelabels are non
exclusive
Key: YARN-4362
URL: https://issues.apache.org/jira/browse/YARN-4362
Project: Hadoop YARN
Issue Type: Bug
Reporter: Bibin A Chundatt
Priority: Critical
Steps to reproduce
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1.Configure HA cluster with 6 nodes and 3 partition(1,2,3) all non exclusive
*Partition configuration is as follows*
1,2 NM's mapped with Label 1
NM 3 to label 2
4,5 NM's mapped to Label 3
NM 6 in DEFAULT partition
In capacity scheduler the queue are linked only to 1,3 partition.
The NM 3 with label 2 is a backup node for any partition whenever required will
change the label.
Submit and application/job with 200 containers to default queue.
All containers that gets assigned to partition 2 gets preempted
The application/map task execution is taking more time since 30-40 task gets
assigned to partition 2 then gets preempted and all of them needs to be
relaunched.
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