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https://issues.apache.org/jira/browse/TEZ-684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14083678#comment-14083678
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Bikas Saha commented on TEZ-684:
--------------------------------
Can we change one of our minicluster tests to use local mode instead? Eg.
TestTezJobs?
> 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: 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.
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