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Posted to yarn-dev@hadoop.apache.org by "Olasoji (JIRA)" <ji...@apache.org> on 2016/10/20 22:52:58 UTC
[jira] [Created] (YARN-5764) NUMA awareness support for launching
containers
Olasoji created YARN-5764:
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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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