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From "Sandesh (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (APEXCORE-482) Default Unifiers should be ThreadLocal with downstream operators
Date Mon, 17 Apr 2017 22:06:42 GMT

     [ https://issues.apache.org/jira/browse/APEXCORE-482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Sandesh reassigned APEXCORE-482:

    Assignee:     (was: Sandesh)

> Default Unifiers should be ThreadLocal with downstream operators
> ----------------------------------------------------------------
>                 Key: APEXCORE-482
>                 URL: https://issues.apache.org/jira/browse/APEXCORE-482
>             Project: Apache Apex Core
>          Issue Type: Improvement
>            Reporter: Sandesh
> Default Unifiers are currently deployed ( except in Mx1 ) as CONTAINER_LOCAL with the
downstream operator. It is better to make it THREAD_LOCAL to improve the performance.
> Custom unifiers can still be CONTAINER_LOCAL and possibly allow the users to control
the behaviours.
> Note: Created a prototype to understand the root cause : https://github.com/sandeshh/apex-core/commit/550f31c770b704360c813924e85a9fffeaec7c53
> During PhysicalPlan creation downstream operator's input port won't have stream locality
assigned. So StreamingContainerAgent assigns CONTAINER_LOCAL
> Actual implementation should be done in Physical Plan.

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