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Posted to yarn-dev@hadoop.apache.org by "zhangshilong (JIRA)" <ji...@apache.org> on 2016/12/30 06:34:58 UTC
[jira] [Created] (YARN-6045) apps/queues that have no pending
containers will still affect the efficiency of scheduling
zhangshilong created YARN-6045:
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Summary: apps/queues that have no pending containers will still affect the efficiency of scheduling
Key: YARN-6045
URL: https://issues.apache.org/jira/browse/YARN-6045
Project: Hadoop YARN
Issue Type: Improvement
Components: fairscheduler
Affects Versions: 2.7.1
Environment: jdk 1.7
kernel:2.6.32-431.20.3.el6
Reporter: zhangshilong
Assignee: zhangshilong
Sorting queues/apps consumes a significant amount of time during a single container allocation.
Each time a container is assigned, all queues / apps are sorted by hierarchy.
In practice, many queues / apps without pending container do not need to participate in the sort.
Without the need for resources, apps / queues do not participate in sorting, scheduling performance will increase a lot.
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