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From "Ravi Prakash (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (MAPREDUCE-4458) Warn if java.library.path is used for AM or Task
Date Tue, 16 Oct 2012 21:41:04 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4458?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Ravi Prakash reassigned MAPREDUCE-4458:

    Assignee: Ravi Prakash  (was: Robert Joseph Evans)
> Warn if java.library.path is used for AM or Task
> ------------------------------------------------
>                 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, 2.0.2-alpha
>            Reporter: Robert Joseph Evans
>            Assignee: Ravi Prakash
> 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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