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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4814) Configurable DataXceiver thread stack size
Date Mon, 17 Mar 2014 20:22:50 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4814?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Tsz Wo Nicholas Sze updated HDFS-4814:

    Resolution: Won't Fix
        Status: Resolved  (was: Patch Available)

Since it only changes VSZ usage but does not RSS, the improvement may not be useful.  Resolving
as won't fix.

> Configurable DataXceiver thread stack size
> ------------------------------------------
>                 Key: HDFS-4814
>                 URL: https://issues.apache.org/jira/browse/HDFS-4814
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: datanode
>            Reporter: Tsz Wo Nicholas Sze
>            Assignee: Tsz Wo Nicholas Sze
>         Attachments: TestThreadStackSize.java, h4814_20130510.patch
> By default, Java creates a thread with 512kB stack size.  In Datanode, we may have 4096
or more DataXceiver threads.  These threads do not require such large stack size and unnecessarily
occupy a large amount of memory.

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