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Posted to common-issues@hadoop.apache.org by "Colin Patrick McCabe (JIRA)" <ji...@apache.org> on 2012/09/14 00:30:07 UTC
[jira] [Commented] (HADOOP-8806) libhadoop.so: search
java.library.path when calling dlopen
[ https://issues.apache.org/jira/browse/HADOOP-8806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13455372#comment-13455372 ]
Colin Patrick McCabe commented on HADOOP-8806:
----------------------------------------------
One issue is that if we ever move from using {{dlopen}} to linking directory against libsnappy or libz, this trick won't work. so maybe {{LD_LIBRARY_PATH}} is the better way after all? Hmm.
> 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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