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https://issues.apache.org/jira/browse/MAPREDUCE-6491?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16166531#comment-16166531
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Allen Wittenauer commented on MAPREDUCE-6491:
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a) DYLD_LIBRARY_PATH should be in the list
b) As mentioned several times, this won't work if a job (e.g., streaming)
calls the shell scripts with the default values.
> Environment variable handling assumes values should be appended
> ---------------------------------------------------------------
>
> Key: MAPREDUCE-6491
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6491
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.2.0
> Reporter: Jason Lowe
> Assignee: Dustin Cote
> Attachments: MAPREDUCE-6491.011.patch, YARN-2369-10.patch,
> YARN-2369-1.patch, YARN-2369-2.patch, YARN-2369-3.patch, YARN-2369-4.patch,
> YARN-2369-5.patch, YARN-2369-6.patch, YARN-2369-7.patch, YARN-2369-8.patch,
> YARN-2369-9.patch
>
>
> When processing environment variables for a container context the code
> assumes that the value should be appended to any pre-existing value in the
> environment. This may be desired behavior for handling path-like environment
> variables such as PATH, LD_LIBRARY_PATH, CLASSPATH, etc. but it is a
> non-intuitive and harmful way to handle any variable that does not have
> path-like semantics.
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