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From "Roman Shaposhnik (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8806) libhadoop.so: search java.library.path when calling dlopen
Date Thu, 13 Sep 2012 23:38:07 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13455440#comment-13455440
] 

Roman Shaposhnik commented on HADOOP-8806:
------------------------------------------

FYI: snappy is now pretty widely available. Even on CentOS 5: http://pkgs.org/search/?keyword=snappy

With that in mind, I'd rather link against it dynamically. Especially if we are not getting
rid of dynamic aspect alltogether (libz will remain to be dynamically linked).
                
> libhadoop.so: search java.library.path when calling dlopen
> ----------------------------------------------------------
>
>                 Key: HADOOP-8806
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8806
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: Colin Patrick McCabe
>            Priority: Minor
>
> 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.
> Should we also search {{java.library.path}} when loading these libraries?

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