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Posted to yarn-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2016/05/03 18:56:13 UTC
[jira] [Created] (YARN-5035) FairScheduler: Adjust maxAssign
dynamically when assignMultiple is turned on
Karthik Kambatla created YARN-5035:
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Summary: FairScheduler: Adjust maxAssign dynamically when assignMultiple is turned on
Key: YARN-5035
URL: https://issues.apache.org/jira/browse/YARN-5035
Project: Hadoop YARN
Issue Type: Improvement
Components: fairscheduler
Affects Versions: 2.8.0
Reporter: Karthik Kambatla
Assignee: Karthik Kambatla
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.
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