[
https://issues.apache.org/jira/browse/HADOOP-3298?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Nigel Daley updated HADOOP-3298:
--------------------------------
Description:
[Hadoop 1660] add the tasks's working directory to it's JAVA_LIBRARY_PATH, this
allows to distribute JNI based native libs with the DistributedCache by
symbolically linking them to the tasks's working directory.
There are many instances when the JNI components have transitive dependencies
to other native libraries. Even if we have symlinks for these in tasks's
working directory, they'll not resolved as transitive dependencies of native
libraries are looked up in the shell's LD_LIBRARY_PATH and not in the
JAVA_LIBRARY_PATH. This can be tackled by adding CWD to JAVA_LIBRARY_PATH in
the *hadoop-env.sh*.
A better way to do this would be to add the CWD only in environment of the Task
Tracker as only it needs it.
was:
[Hadoop 1660] add the tasks's working directory to it's JAVA_LIBRARY_PATH, this
allows to distribute JNI based native libs with the DistributedCache by
symbolically linking them to the tasks's working directory.
There are many instances when the JNI components have transitive dependencies
to other native libraries. Even if we have symlinks for these in tasks's
working directory, they'll not resolved as transitive dependencies of native
libraries are looked up in the shell's LD_LIBRARY_PATH and not in the
JAVA_LIBRARY_PATH. This can be tackled by adding CWD to JAVA_LIBRARY_PATH in
the *hadoop-env.sh*.
A better way to do this would be to add the CWD only in environment of the Task
Tracker as only it needs it.
Fix Version/s: (was: 0.18.0)
> Add support for transitive native library dependencies in DistributedCache
> ---------------------------------------------------------------------------
>
> Key: HADOOP-3298
> URL: https://issues.apache.org/jira/browse/HADOOP-3298
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Environment: unix (different handling would be required for windows)
> Reporter: Subramaniam Krishnan
>
> [Hadoop 1660] add the tasks's working directory to it's JAVA_LIBRARY_PATH,
> this allows to distribute JNI based native libs with the DistributedCache by
> symbolically linking them to the tasks's working directory.
> There are many instances when the JNI components have transitive dependencies
> to other native libraries. Even if we have symlinks for these in tasks's
> working directory, they'll not resolved as transitive dependencies of native
> libraries are looked up in the shell's LD_LIBRARY_PATH and not in the
> JAVA_LIBRARY_PATH. This can be tackled by adding CWD to JAVA_LIBRARY_PATH in
> the *hadoop-env.sh*.
> A better way to do this would be to add the CWD only in environment of the
> Task Tracker as only it needs it.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
