[jira] [Created] (TEZ-1507) Add a doc/wiki page for explaining grouping of splits

["Hitesh Shah (JIRA)" <ji...@apache.org>]

Hitesh Shah created TEZ-1507:
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             Summary: Add a doc/wiki page for explaining grouping of splits
                 Key: TEZ-1507
                 URL: https://issues.apache.org/jira/browse/TEZ-1507
             Project: Apache Tez
          Issue Type: Bug
            Reporter: Hitesh Shah
            Assignee: Bikas Saha


Questions such as why is the no. of tasks 32 when the split count is set to 20 :

set tez.am.grouping.by-count=true;  
set tez.am.grouping.split-count=20;

Map 1: 16(+16)/32    Map 3: 1/1    Map 4: 1/1    Reducer 2: 0/1 

It would be good if there was a definite doc that users could be redirected to. 



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