[jira] [Updated] (TEZ-1259) Vertex should move to RUNNING state without generating an extra VERTEX_START event

["Kuhu Shukla (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TEZ-1259?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kuhu Shukla updated TEZ-1259:
-----------------------------
    Attachment: TEZ-1259.001.patch

[~sseth], this may be a slightly different but related problem where vertices that are re-run due to retroactive failures do not show up on the UI as Running and in cases where we did hit TEZ-3758, the vertex state showed succeeded instead of running. This patch *adds* log for VERTEX_STARTED event when this happens. I can open a different JIRA if you think this issue is unrelated. Appreciate any comments on this. Will leave this JIRA open until we decide which way to go.

> Vertex should move to RUNNING state without generating an extra VERTEX_START event
> ----------------------------------------------------------------------------------
>
>                 Key: TEZ-1259
>                 URL: https://issues.apache.org/jira/browse/TEZ-1259
>             Project: Apache Tez
>          Issue Type: Improvement
>            Reporter: Siddharth Seth
>         Attachments: TEZ-1259.001.patch
>
>
> Currently, we end up generating a VERTEX_START event targeted at the same vertex when a vertex is ready to start. Instead, the Vertex can directly move to started state - which prevents unnecessary event queueing.



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