Robert Joseph Evans created MAPREDUCE-4458:
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Summary: Warn in java.library.path is used
Key: MAPREDUCE-4458
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4458
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: mrv2
Affects Versions: 0.23.3, 3.0.0, 2.2.0-alpha
Reporter: Robert Joseph Evans
Assignee: Robert Joseph Evans
If java.library.path is used on the command line for launching an MRAppMaster
or an MR Task, it could conflict with how standard Hadoop/HDFS JNI libraries
and dependencies are found. At a minimum the client should output a warning
and ask the user to switch to LD_LIBRARY_PATH. It would be nice to
automatically do this for them but parsing the command line is scary so just a
warning is probably good enough for now.
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