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https://issues.apache.org/jira/browse/MAPREDUCE-6627?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15143832#comment-15143832
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Robert Kanter commented on MAPREDUCE-6627:
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I think I figured out the "if x then return idiom" stuff you were referring to.
I'll change those.
> Add machine-readable output to mapred job -history command
> ----------------------------------------------------------
>
> Key: MAPREDUCE-6627
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6627
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: client
> Affects Versions: 2.9.0
> Reporter: Robert Kanter
> Assignee: Robert Kanter
> Attachments: MAPREDUCE-6627.001.patch, MAPREDUCE-6627.002.patch,
> json.txt, json_all.txt
>
>
> It would be great if we could add a machine-readable output format, say JSON,
> to the {{mapred job -history \[all\] <jobHistoryFile>}} command so that it's
> easier for programs to consume that information and do further processing on
> it. At the same time, we should keep the existing API and formatting intact
> for backwards compatibility.
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