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From "Matthieu Morel (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (S4-47) add pluggable partitioning schemes
Date Sun, 10 Jun 2012 09:14:42 GMT

    [ https://issues.apache.org/jira/browse/S4-47?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13292499#comment-13292499
] 

Matthieu Morel commented on S4-47:
----------------------------------

I was referring to inter-app communications, for keyless events. 

We now have a clearer view with the implementation in S4-22, documented here: https://issues.apache.org/jira/secure/attachment/12531387/Inter%20cluster%20communication%20in%20S4%20piper.pdf

Currently, in S4, producer apps can control event dispatch by defining the keys through a
KeyFinder when they create remote streams. For keyless events, it's preferable to do some
round-robin as you mentioned, so I have modified the default policy for keyless events (commit
c34742d8711b439f8f17c1d9417e62468ed59cb5 in S4-22). 

We still need to add pluggable policies.
                
> add pluggable partitioning schemes
> ----------------------------------
>
>                 Key: S4-47
>                 URL: https://issues.apache.org/jira/browse/S4-47
>             Project: Apache S4
>          Issue Type: New Feature
>    Affects Versions: 0.5
>            Reporter: Matthieu Morel
>             Fix For: 0.5
>
>
> In the case of adapter to application cluster communication, the current default is that
the stream is broadcasted from the adapter to all nodes of the application cluster. We must
be able to specify a scheme for balancing the data, e.g. round robin, random etc...

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