You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@tez.apache.org by "Jason Lowe (JIRA)" <ji...@apache.org> on 2018/04/02 21:21:00 UTC

[jira] [Updated] (TEZ-3909) DAG can hang if vertex with no tasks is killed

     [ https://issues.apache.org/jira/browse/TEZ-3909?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jason Lowe updated TEZ-3909:
----------------------------
    Attachment: TEZ-3909.001.patch

> DAG can hang if vertex with no tasks is killed
> ----------------------------------------------
>
>                 Key: TEZ-3909
>                 URL: https://issues.apache.org/jira/browse/TEZ-3909
>             Project: Apache Tez
>          Issue Type: Bug
>    Affects Versions: 0.9.0
>            Reporter: Jason Lowe
>            Assignee: Jason Lowe
>            Priority: Major
>         Attachments: TEZ-3909.001.patch
>
>
> If a vertex with no tasks is killed just as it is starting then the vertex can fail to reach a terminal state if the terminate event arrives while the vertex is still in the RUNNING state.  The terminate moves it to the TERMINATING state which ignores the V_COMPLETED event that later arrives.  Once it drops the completed event, no other event will kick it out of the TERMINATING state and the DAG hangs forever waiting for all vertices to complete.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)