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Date: Thu, 20 Oct 2016 22:52:58 +0000 (UTC)
From: "Olasoji (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.13014081.1477003925000.46003.1477003978346@Atlassian.JIRA>
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References: <JIRA.13014081.1477003925000@Atlassian.JIRA> <JIRA.13014081.1477003925806@arcas>
Subject: [jira] [Created] (YARN-5764) NUMA awareness support for launching
 containers
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archived-at: Thu, 20 Oct 2016 22:53:00 -0000

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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