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From "Dave Marion (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13225) Allow java to be started with numactl
Date Fri, 03 Jun 2016 18:15:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13225?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15314521#comment-15314521
] 

Dave Marion commented on HADOOP-13225:
--------------------------------------

[~jzhuge] Now that the scope has expanded I don't know that I will have time and the ability
to test this. If you have the cycles and the ability to do this, please take it.

> Allow java to be started with numactl
> -------------------------------------
>
>                 Key: HADOOP-13225
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13225
>             Project: Hadoop Common
>          Issue Type: New Feature
>          Components: scripts
>            Reporter: Dave Marion
>            Assignee: Dave Marion
>         Attachments: HDFS-10370-1.patch, HDFS-10370-2.patch, HDFS-10370-3.patch, HDFS-10370-branch-2.004.patch,
HDFS-10370.004.patch
>
>
> Allow numactl constraints to be applied to the datanode process. The implementation I
have in mind involves two environment variables (enable and parameters) in the datanode startup
process. Basically, if enabled and numactl exists on the system, then start the java process
using it. Provide a default set of parameters, and allow the user to override the default.
Wiring this up for the non-jsvc use case seems straightforward. Not sure how this can be supported
using jsvc.



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