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https://issues.apache.org/jira/browse/TEZ-1897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14517996#comment-14517996
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Bikas Saha commented on TEZ-1897:
---------------------------------

the patch enabled it by default to get the jenkins run with it. It will be off 
by default.

> Create a concurrent version of AsyncDispatcher
> ----------------------------------------------
>
>                 Key: TEZ-1897
>                 URL: https://issues.apache.org/jira/browse/TEZ-1897
>             Project: Apache Tez
>          Issue Type: Task
>            Reporter: Bikas Saha
>            Assignee: Bikas Saha
>         Attachments: TEZ-1897.1.patch, TEZ-1897.2.patch, TEZ-1897.3.patch, 
> TEZ-1897.4.patch, TEZ-1897.5.patch
>
>
> Currently, it processes events on a single thread. For events that can be 
> executed in parallel, e.g. vertex manager events, allowing higher concurrency 
> may be beneficial.



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