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Posted to mapreduce-issues@hadoop.apache.org by "Ray Chiang (JIRA)" <ji...@apache.org> on 2016/01/22 01:44:39 UTC

[jira] [Created] (MAPREDUCE-6613) Change mapreduce.jobhistory.jhist.format default from json to binary

Ray Chiang created MAPREDUCE-6613:
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             Summary: Change mapreduce.jobhistory.jhist.format default from json to binary
                 Key: MAPREDUCE-6613
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6613
             Project: Hadoop Map/Reduce
          Issue Type: New Feature
    Affects Versions: 2.8.0
            Reporter: Ray Chiang
            Assignee: Ray Chiang
            Priority: Minor


MAPREDUCE-6376 added a configuration setting to set up .jhist internal format:

mapreduce.jobhistory.jhist.format

Currently, the default is "json".  Changing the default to "binary" allows faster parsing, but with the downside of making the file not output friendly by using "hadoop fs cat".



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