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https://issues.apache.org/jira/browse/APEXCORE-565?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15610081#comment-15610081
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Sanjay M Pujare commented on APEXCORE-565:
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When will inactive operators be activated? Are there automation use cases where
operators (and streams) will be activated based on a condition/event that
happens in the application itself?
> Ability to activate and de-activate operators in the DAG
> --------------------------------------------------------
>
> Key: APEXCORE-565
> URL: https://issues.apache.org/jira/browse/APEXCORE-565
> Project: Apache Apex Core
> Issue Type: New Feature
> Reporter: Vlad Rozov
>
> Currently, there is no ability to mark operators/streams as inactive and
> activate or de-activate them at run-time based on a condition or event. It
> should be possible to statically populate DAG, but mark some operators as
> inactive, so stram app master will not allocate physical nodes for inactive
> operators and will not request containers from Yarn or any other resource
> manager. This will allow to save resources and better support batch
> operations in Apex.
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