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Posted to issues@tez.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2017/06/22 16:10:00 UTC

[jira] [Created] (TEZ-3770) DAG-aware YARN task scheduler

Jason Lowe created TEZ-3770:
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             Summary: DAG-aware YARN task scheduler
                 Key: TEZ-3770
                 URL: https://issues.apache.org/jira/browse/TEZ-3770
             Project: Apache Tez
          Issue Type: New Feature
            Reporter: Jason Lowe
            Assignee: Jason Lowe


There are cases where priority alone does not convey the relationship between tasks, and this can cause problems when scheduling or preempting tasks.  If the YARN task scheduler was aware of the relationship between tasks then it could make smarter decisions when trying to assign tasks to containers or preempt running tasks to schedule pending tasks.



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