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https://issues.apache.org/jira/browse/HADOOP-8806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13455512#comment-13455512
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Colin Patrick McCabe commented on HADOOP-8806:
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bq. [rpath discussion]
The problem is, we don't know at compile-time where libsnappy.so will be.
Normally there's a "make install" step where rpaths get injected, but there is
nothing like that for Hadoop.
Sadly, I have encountered an issue that I think puts the kibosh on the "static
libsnappy" idea-- you cannot link a .a into a .so. I don't know why I didn't
think of that earlier.
> 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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