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https://issues.apache.org/jira/browse/HADOOP-1570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12512444
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Hudson commented on HADOOP-1570:
--------------------------------

Integrated in Hadoop-Nightly #154 (See 
[http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Nightly/154/])

> Add a per-job configuration knob to control loading of native hadoop 
> libraries 
> -------------------------------------------------------------------------------
>
>                 Key: HADOOP-1570
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1570
>             Project: Hadoop
>          Issue Type: New Feature
>          Components: io
>    Affects Versions: 0.12.3, 0.13.0
>            Reporter: Arun C Murthy
>            Assignee: Arun C Murthy
>             Fix For: 0.14.0
>
>         Attachments: HADOOP-1570_1_20070709.patch, 
> HADOOP-1570_2_20070713.patch
>
>
> As it exists today, native-hadoop libraries are loaded automatically if 
> libhadoop.so is present; however we have sporadically seen issues 
> (HADOOP-1545) since native direct-buffers aren't very well understood. The 
> only way to switch off usage of these is to remove the native libraries which 
> is a maintenence issue for large clusters...
> Hence I propose we add a per-job config knob: {{hadoop.native.lib}} (set to 
> {{true}} by default) which can be used to control usage of native libraries 
> even when the libraries are present e.g. we can have hadoop installed with 
> native libraries present and then use this knob to switch off their usage in 
> rare cases we see issues with them; thus aiding maintenence.

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