[jira] [Work started] (TEZ-1273) Refactor DAGAppMaster to state machine based

["Jeff Zhang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TEZ-1273?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on TEZ-1273 started by Jeff Zhang.

> Refactor DAGAppMaster to state machine based
> --------------------------------------------
>
>                 Key: TEZ-1273
>                 URL: https://issues.apache.org/jira/browse/TEZ-1273
>             Project: Apache Tez
>          Issue Type: Improvement
>    Affects Versions: 0.4.0
>            Reporter: Jeff Zhang
>            Assignee: Jeff Zhang
>         Attachments: dag_app_master.pdf
>
>
> Almost all our entities (Vertex, Task etc) are state machine based and written using a formal state machine. But DAGAppMaster is not written on a formal state machine even though it has a state machine based behavior. This jira is for refactoring it into state machine based



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