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From "Radim Kolar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8901) GZip and Snappy support may not work without unversioned libraries
Date Mon, 22 Oct 2012 22:36:14 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13481881#comment-13481881
] 

Radim Kolar commented on HADOOP-8901:
-------------------------------------

I am testing on FreeBSD 8.3 64bit. There is no symlink as you can see zlibrary is sitting
in /lib

in config.h on bsd is:
#define HADOOP_ZLIB_LIBRARY "libz.so"
                
> GZip and Snappy support may not work without unversioned libraries
> ------------------------------------------------------------------
>
>                 Key: HADOOP-8901
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8901
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: native
>    Affects Versions: 2.0.3-alpha
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>            Priority: Minor
>             Fix For: 3.0.0, 2.0.3-alpha
>
>         Attachments: HADOOP-8901.001.patch, HADOOP-8901.002.patch, HADOOP-8901.003.patch
>
>
> Currently, we use {{dlopen}} to open {{libz.so}} and {{libsnappy.so}}, to get Gzip and
Snappy support, respectively.
> However, this is not correct; we should be dlopening {{libsnappy.so.1}} instead.  The
versionless form of the shared library is not commonly installed except by development packages.
 Also, we may run into subtle compatibility problems if a new version of libsnappy comes out.
> Thanks to Brandon Vargo for reporting this bug.

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