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Posted to dev@tez.apache.org by "Muhammad Samir Khan (JIRA)" <ji...@apache.org> on 2017/08/09 21:17:01 UTC

[jira] [Created] (TEZ-3816) Ability to automatically speculate single-task vertices

Muhammad Samir Khan created TEZ-3816:
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             Summary: Ability to automatically speculate single-task vertices
                 Key: TEZ-3816
                 URL: https://issues.apache.org/jira/browse/TEZ-3816
             Project: Apache Tez
          Issue Type: Improvement
            Reporter: Muhammad Samir Khan
            Assignee: Muhammad Samir Khan


When a single-task vertex is unlucky, it lands on a very slow node. Speculation doesn't currently apply when there are no other tasks to compare with. It would be good to either have a configurable timeout after which the tasks automatically speculate.



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