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From "Kihwal Lee (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3259) ContainerLocalizer should get the proper java.library.path from LinuxContainerExecutor
Date Tue, 25 Oct 2011 10:16:32 GMT
ContainerLocalizer should get the proper java.library.path from LinuxContainerExecutor
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                 Key: MAPREDUCE-3259
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3259
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: nodemanager
    Affects Versions: 0.23.0, 0.24.0
            Reporter: Kihwal Lee
            Assignee: Kihwal Lee
            Priority: Critical


As seen in MAPREDUCE-2915, java.library.path is not being passed when the LCE spawns a JVM
for ContainerLocalizer. 

However, unlike branch-0.20-security, the task runtime in 0.23 is unaffected by this. This
is because tasks' run-time environment is specified in the launch script by client. Setting
LD_LIBRARY_PATH is the primary way of specifying the locations of required native library
in this case. The config property, mapreduce.admin.user.env is always set in the job environment
and the default value is to add the path to the hadoop native library to LD_LABRARY_PATH.

For JVM's being launched by the hadoop system scripts, java.library.path is set.

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