[jira] [Commented] (APEXCORE-474) Unifier placement during M*1 deployment

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/APEXCORE-474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15543634#comment-15543634 ] 

ASF GitHub Bot commented on APEXCORE-474:
-----------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/apex-core/pull/395


> Unifier placement during M*1 deployment
> ---------------------------------------
>
>                 Key: APEXCORE-474
>                 URL: https://issues.apache.org/jira/browse/APEXCORE-474
>             Project: Apache Apex Core
>          Issue Type: Improvement
>            Reporter: Sandesh
>            Assignee: Sandesh
>             Fix For: 3.5.0
>
>
> During M*1 deployment, unifier was deployed in the separate container. But there is no advantage in doing that. 
> It is better to make the unifier THREAD_LOCAL with the downstream operator.
> ( https://issues.apache.org/jira/browse/APEXCORE-482 )
> Note:
> Recently saw one Kafka ETL app, that had a total of 18 containers allocated, but out of that 5 containers were allocated for default unifiers. It also means, lots of time is spent in SerDe. 
> Implementing this feature will improve the performance greatly.



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