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From "Thomas Weise (JIRA)" <j...@apache.org>
Subject [jira] [Reopened] (APEXCORE-23) Introduce an ability for the placeholder operators which replace themselves with a dag of their own dynamically
Date Mon, 28 Dec 2015 00:00:54 GMT

     [ https://issues.apache.org/jira/browse/APEXCORE-23?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Thomas Weise reopened APEXCORE-23:
----------------------------------

> Introduce an ability for the placeholder operators which replace themselves with a dag
of their own dynamically
> ---------------------------------------------------------------------------------------------------------------
>
>                 Key: APEXCORE-23
>                 URL: https://issues.apache.org/jira/browse/APEXCORE-23
>             Project: Apache Apex Core
>          Issue Type: New Feature
>            Reporter: Chetan Narsude
>            Assignee: Vlad Rozov
>
> In the current form, an operator can replace it's position with its own instances. We
call this partitioning. There are use cases when the operators can replace themselves with
dags which will be semi permanent as in each of the operators in this replaced dag play the
primary operator role as the original operator until needed.
> One such use case is structured query execution. 
> We can start with the static dag creation (functionality that StreamingApplication already
has) and peel our way to dynamic behavior.



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