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From "Dave Marion (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10370) Allow DataNode to be started with numactl
Date Tue, 17 May 2016 18:18:12 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10370?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dave Marion updated HDFS-10370:
-------------------------------
    Attachment: HDFS-10370-2.patch

Tested locally by applying similar changes to 2.7.0.

> Allow DataNode to be started with numactl
> -----------------------------------------
>
>                 Key: HDFS-10370
>                 URL: https://issues.apache.org/jira/browse/HDFS-10370
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>            Reporter: Dave Marion
>            Assignee: Dave Marion
>         Attachments: HDFS-10370-1.patch, HDFS-10370-2.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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