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Posted to yarn-issues@hadoop.apache.org by "Arun Suresh (JIRA)" <ji...@apache.org> on 2017/09/26 22:51:00 UTC
[jira] [Created] (YARN-7258) Add Node and Rack Hints to
Opportunistic Scheduler
Arun Suresh created YARN-7258:
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Summary: Add Node and Rack Hints to Opportunistic Scheduler
Key: YARN-7258
URL: https://issues.apache.org/jira/browse/YARN-7258
Project: Hadoop YARN
Issue Type: Bug
Reporter: Arun Suresh
Assignee: kartheek muthyala
Currently, the Opportunistic Scheduler ignores the node and rack information and allocates strictly on the least loaded node (based on queue length) at the time it received the request. This JIRA is to track changes needed to allow the OpportunisticContainerAllocator to take the node/rack name as hints.
The flow would be:
# If requested node found in the top K leastLoaded nodes, allocate on that node
# Else, allocate on least loaded node on the same rack from the top K least Loaded nodes.
# Else, allocate on least loaded node.
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