[jira] [Updated] (TEZ-684) Uber/Local modes for Tez

["Vinod Kumar Vavilapalli (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TEZ-684?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vinod Kumar Vavilapalli updated TEZ-684:
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    Summary: Uber/Local modes for Tez  (was: Uber-mode for Tez)

> Uber/Local modes for Tez
> ------------------------
>
>                 Key: TEZ-684
>                 URL: https://issues.apache.org/jira/browse/TEZ-684
>             Project: Apache Tez
>          Issue Type: New Feature
>            Reporter: Chen He
>            Assignee: Chen He
>         Attachments: TezUberModeDesignDraft.png
>
>
> Similarly to MapReduce Uber-mode in Yarn, we plan to create the Uber-mode for Tez. It runs all tasks in local in one process.
> Our target is to start DAGAppMaster in local JVM and let it run all tasks in one process. 
> Here is my design: 
> Once user submits a DAG, Tez starts a instance of DAGAppMaster. This DAGAppMaster will check TezConfiguration before instantiate ContainerLauncher. If "is_Uber" is true, DAGAppMaster creates a LocalContainerLauncher. LocalTaskScheduler and LocalTaskSchedulerEventHandler will call LocalContainerLauncher to run all tasks one by one in a single JVM. Communications between ResourceManager and local classes (DAGAppMaster, LocalContainerLauncher, LocalTaskScheduler, and LocalTaskSchedulerEventHandler) are muted.



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