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Posted to issues@tez.apache.org by "Sreenath Somarajapuram (JIRA)" <ji...@apache.org> on 2015/09/04 03:25:45 UTC

[jira] [Created] (TEZ-2777) DAG progress calculation in DAGImpl is incorrect

Sreenath Somarajapuram created TEZ-2777:
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             Summary: DAG progress calculation in DAGImpl is incorrect
                 Key: TEZ-2777
                 URL: https://issues.apache.org/jira/browse/TEZ-2777
             Project: Apache Tez
          Issue Type: Bug
            Reporter: Sreenath Somarajapuram


- getProgress function in org.apache.tez.dag.app.dag.impl.DAGImpl calculates the progress by taking average of all vertex progresses, and vertexProgress is average of task progresses.
- We are calculating average of averages, which wouldn't give the expected results when total number of tasks in each vertices vary drastically.
- Guess it should be average progress of all tasks under a DAG, and not average of vertex progresses.



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