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https://issues.apache.org/jira/browse/HADOOP-9205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13553909#comment-13553909
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Thomas Graves commented on HADOOP-9205:
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I ran a quick job using jdk1.7.0_10 and it loads the native libraries fine.
This was using jdk1.7.0_10 for execution, jars were still built with jdk1.6.
Also I tried to reproduce with method you stated. On trunk I wasn't able to
reproduce. Note I built all source code with jdk1.7.0_10 and then ran the
test. I did have to create a symlink from
hadoop-common-project/hadoop-common/target/native/target/usr/local/lib/libhadoop.so
to
hadoop-common-project/hadoop-common/target/native/target/usr/local/lib/libhadoop.so.1.0.0.
I'm not sure what happened to libhadoop.so I'll have to investigate. I need to
look at the jdk release notes in more detail but at a glance it says "Java
applications invoking JDK 7 from a legacy JDK must be careful to clean up the
LD_LIBRARY_PATH environment variable before executing JDK 7" which makes me
wonder if it applies.
> Java7: path to native libraries should be passed to tests via
> -Djava.library.path rather than env.LD_LIBRARY_PATH
> -----------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-9205
> URL: https://issues.apache.org/jira/browse/HADOOP-9205
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 3.0.0, 2.0.3-alpha, 0.23.6
> Reporter: Ivan A. Veselovsky
> Assignee: Ivan A. Veselovsky
> Attachments: HADOOP-9205.patch
>
>
> Currently the path to native libraries is passed to unit tests via
> environment variable LD_LIBRARTY_PATH. This is okay for Java6, but does not
> work for Java7, since Java7 ignores this environment variable.
> So, to run the tests with native implementation on Java7 one needs to pass
> the paths to native libs via -Djava.library.path system property rather than
> the LD_LIBRARY_PATH env variable.
> The suggested patch fixes the problem via setting the paths to native libs
> using both LD_LIBRARY_PATH and -Djava.library.path property. This way the
> tests work equally on both Java6 and Java7.
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