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From "Zhiyuan Yang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (TEZ-3573) Allow user to cap number of task in cartesian product (unpartitioned case)
Date Tue, 10 Jan 2017 22:07:58 GMT
Zhiyuan Yang created TEZ-3573:
---------------------------------

             Summary: Allow user to cap number of task in cartesian product (unpartitioned
case)
                 Key: TEZ-3573
                 URL: https://issues.apache.org/jira/browse/TEZ-3573
             Project: Apache Tez
          Issue Type: Sub-task
            Reporter: Zhiyuan Yang
            Assignee: Zhiyuan Yang


Auto grouping can help reduce #tasks in cartesian product but may still result in too many
tasks in case of huge input data. It will be useful for user to cap #task, so that cartesian
product won't abuse available resource. The primary limiter will still be auto grouping, but
this will be a hard limit which cannot be exceeded anyway.



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