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From "Olasoji (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-5764) NUMA awareness support for launching containers
Date Thu, 20 Oct 2016 22:52:58 GMT
Olasoji created YARN-5764:

             Summary: NUMA awareness support for launching containers
                 Key: YARN-5764
                 URL: https://issues.apache.org/jira/browse/YARN-5764
             Project: Hadoop YARN
          Issue Type: New Feature
          Components: nodemanager, yarn
    Affects Versions: 2.6.0
         Environment: SW: CentOS 6.7, Hadoop 2.6.0
Processors: Intel Xeon CPU E5-2699 v4 @2.20GHz
Memory: 256GB 4 NUMA nodes
            Reporter: Olasoji
             Fix For: 2.6.0

The purpose of this feature is to improve Hadoop performance by minimizing costly remote memory
accesses on non SMP systems. Yarn containers, on launch, will be pinned to a specific NUMA
node and all subsequent memory allocations will be served by the same node, reducing remote
memory accesses. The current default behavior is to spread memory across all NUMA nodes.

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