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https://issues.apache.org/jira/browse/HADOOP-6069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12728969#action_12728969
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Todd Lipcon commented on HADOOP-6069:
-------------------------------------
The advantage is a significant cleanup of both the autotools and source. I
don't see any advantage to dynamically loading libz - zlib is installed on
pretty much every Linux system I've ever seen. HADOOP-4652 also seems to depend
on libz. If it needs to be updated so it doesn't conflict, I'm happy to do that.
> Remove explicit dynamic loading of libz in native code
> ------------------------------------------------------
>
> Key: HADOOP-6069
> URL: https://issues.apache.org/jira/browse/HADOOP-6069
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Attachments: hadoop-6069-guts.txt, hadoop-6069.txt
>
>
> The native zlib code currently uses dlopen/dlsym to dynamically load libz.
> This used to make sense when there was an lzo option (so you could load
> libhadoop for lzo purposes without requiring libz as well). Now that
> libhadoop only has zlib as an option, it makes sense to just add it as an ld
> flag and let it be automatically loaded as a shlib dependency. I also doubt
> that there are any distros where libz isn't required by the base system.
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