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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8806) libhadoop.so: dlopen should be better at locating libsnappy.so, etc.
Date Fri, 14 Sep 2012 23:30:07 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13456228#comment-13456228
] 

Eli Collins commented on HADOOP-8806:
-------------------------------------

Overall seems reasonable.
- Why use RPATH instead of RUNPATH?
- Have you tested with libsnappy.so in $HADOOP_ROOT/lib/native as well as installed in the
system (ie in LD_LIBRARY_PATH)?
                
> libhadoop.so: dlopen should be better at locating libsnappy.so, etc.
> --------------------------------------------------------------------
>
>                 Key: HADOOP-8806
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8806
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>            Priority: Minor
>         Attachments: HADOOP-8806.003.patch
>
>
> libhadoop calls {{dlopen}} to load {{libsnappy.so}} and {{libz.so}}.  These libraries
can be bundled in the {{$HADOOP_ROOT/lib/native}} directory.  For example, the {{-Dbundle.snappy}}
build option copies {{libsnappy.so}} to this directory.  However, snappy can't be loaded from
this directory unless {{LD_LIBRARY_PATH}} is set to include this directory.
> Can we make this configuration "just work" without needing to rely on {{LD_LIBRARY_PATH}}?

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