[
https://issues.apache.org/jira/browse/TEZ-684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14251318#comment-14251318
]
Siddharth Seth commented on TEZ-684:
------------------------------------
[~airbots], there isn't any official process that is followed for Umbrella
jiras. From what I've noticed in the past, and what I think - umbrellas don't
need an owner since there's a lot of derived work done elsewhere - which has
the appropriate owner. Since I was closing the jira, I changed it to
unassigned. Please do not read more into this than what I believe should happen
with umbrellas. I don't really care if an owner stays - but think it's better
if there weren't any.
Obviously, you (along with a lot of others) have contributed towards local mode
and that clearly reflects in the sub-jiras, comments and the commit log as
Bikas pointed out.
> 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
> Fix For: 0.5.0
>
> Attachments: TEZ-684-2014-7-21.patch, TEZ-684.patch, TEZ-684.patch,
> TEZ-684.patch, TEZ-684.patch, TEZ-684.patch, TEZ-684.patch, TEZ-684.patch,
> TEZ-684.patch, TEZ-684.patch, TEZ-684.patch, TEZ-684.patch, TEZ-684.patch,
> 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
