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Posted to issues@tez.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2016/04/08 00:35:25 UTC

[jira] [Updated] (TEZ-3203) DAG hangs when one of the upstream vertices has zero tasks

     [ https://issues.apache.org/jira/browse/TEZ-3203?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jason Lowe updated TEZ-3203:
----------------------------
    Attachment: TEZ-3203.001.patch

Patch to have the shuffle vertex manager go ahead and schedule zero tasks (and therefore finish configuring the vertex for any downstream vertices waiting on that) when there are no tasks to schedule.

> DAG hangs when one of the upstream vertices has zero tasks
> ----------------------------------------------------------
>
>                 Key: TEZ-3203
>                 URL: https://issues.apache.org/jira/browse/TEZ-3203
>             Project: Apache Tez
>          Issue Type: Bug
>    Affects Versions: 0.7.0
>            Reporter: Jason Lowe
>            Priority: Critical
>         Attachments: TEZ-3203.001.patch
>
>
> A DAG hangs during execution if it has a vertex with multiple inputs and one of those upstream vertices has zero tasks and is using ShuffleVertexManager.



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