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From "Richard Zang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-11469) The explanation for 'Data per Reducer' could be more clear
Date Thu, 28 May 2015 00:07:16 GMT
Richard Zang created AMBARI-11469:
-------------------------------------

             Summary: The explanation for 'Data per Reducer' could be more clear
                 Key: AMBARI-11469
                 URL: https://issues.apache.org/jira/browse/AMBARI-11469
             Project: Ambari
          Issue Type: Bug
          Components: ambari-web
    Affects Versions: 2.1.0
            Reporter: Richard Zang
            Assignee: Richard Zang
             Fix For: 2.1.0
         Attachments: AMBARI-11469.patch

If you hoover mouse over Data per Reducer at Customize Services of CLUSTER INSTALL WIZARD,
the following message explains what 'Data per Reducer' is as shown in the screenshot:
"size per reducer. The default is 256 Mb, i.e if the the input size is 1G, it will use 4 reducers".
Since the default value is 64 MB on slider, it is not so clear at first why the message says
'the default is 256 Mb'. We can add something like '64 MB x 4 reducers' to make it more clear.



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