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https://issues.apache.org/jira/browse/MAPREDUCE-7069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16433021#comment-16433021
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Jason Lowe commented on MAPREDUCE-7069:
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Thanks for updating the patch! We're getting close.
The example command-line was updated to add the -D flags but they are still
missing in the paragraph preceding it in MapReduceTutorial.md.
Looking at the docs generated at
http://hadoop.apache.org/docs/current/hadoop-mapreduce-client/hadoop-mapreduce-client-core/mapred-default.xml
I'm wondering if it would be more useful to add the description for the .[var]
form of the properties to the base property instead of having separate,
commented-out properties. Users probably won't ever notice the commented-out
text in that file, especially since it's buried in a .jar when deployed, but
many would notice the docs generated for properties that aren't commented out.
Thoughts?
> Add ability to specify user environment variables individually
> --------------------------------------------------------------
>
> Key: MAPREDUCE-7069
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7069
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Reporter: Jim Brennan
> Assignee: Jim Brennan
> Priority: Major
> Attachments: MAPREDUCE-7069.001.patch, MAPREDUCE-7069.002.patch,
> MAPREDUCE-7069.003.patch, MAPREDUCE-7069.004.patch, MAPREDUCE-7069.005.patch,
> MAPREDUCE-7069.006.patch
>
>
> As reported in YARN-6830, it is currently not possible to specify an
> environment variable that contains commas via {{mapreduce.map.env}},
> mapreduce.reduce.env, or {{mapreduce.admin.user.env}}.
> To address this, [~aw] proposed in [YARN-6830] that we add the ability to
> specify environment variables individually:
> {quote}e.g, mapreduce.map.env.[foo]=bar gets turned into foo=bar
> {quote}
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