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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 22:16:14 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13481863#comment-13481863

Radim Kolar commented on HADOOP-8901:

This patch broke it on BSD because there is /lib/libz.so.5, not so.1 as you expect. Why not
simple use "find_package(ZLIB 1 REQUIRED)" ?

this works on bsd nicely:  Found ZLIB: /usr/lib/libz.so (found suitable version "1.2.3", required
is "1")
> 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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