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From "Erik Krogen (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HDFS-13493) Reduce the HttpServer2 thread count on DataNodes
Date Mon, 23 Apr 2018 23:03:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-13493?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16449005#comment-16449005
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Erik Krogen edited comment on HDFS-13493 at 4/23/18 11:02 PM:
--------------------------------------------------------------

This requires setting the acceptor and selector thread counts as well as the max. Attaching
v000 patch for the same.


was (Author: xkrogen):
This requires setting the acceptor and selector thread counts as well as the max.

> Reduce the HttpServer2 thread count on DataNodes
> ------------------------------------------------
>
>                 Key: HDFS-13493
>                 URL: https://issues.apache.org/jira/browse/HDFS-13493
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>            Reporter: Erik Krogen
>            Assignee: Erik Krogen
>            Priority: Major
>         Attachments: HDFS-13272.000.patch
>
>
> Given that HFTP was removed in Hadoop 3 and WebHDFS is handled via Netty, the HttpServer2
instance within the DataNode is only used for very basic tasks such as the web UI. Thus we
can safely reduce the thread count used here.



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