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https://issues.apache.org/jira/browse/HELIX-349?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kanak Biscuitwala resolved HELIX-349.
-------------------------------------

    Resolution: Duplicate

> Coalesce different types of callbacks
> -------------------------------------
>
>                 Key: HELIX-349
>                 URL: https://issues.apache.org/jira/browse/HELIX-349
>             Project: Apache Helix
>          Issue Type: Improvement
>            Reporter: Kanak Biscuitwala
>            Assignee: Kanak Biscuitwala
>
> HELIX-281 is related to making sure that message callbacks in the controller 
> don't starve other types of callbacks in the controller. A more general 
> problem is that we can get a large number of callbacks for any listener, 
> including a large number of external view updates for the spectator, among 
> other situations.
> There should be a way to coalesce these callbacks to prevent them from coming 
> in faster than Helix components can update themselves.



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