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From "Anastasis Andronidis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HAMA-838) Add custom aggregators
Date Mon, 06 Jan 2014 13:33:52 GMT

    [ https://issues.apache.org/jira/browse/HAMA-838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13862989#comment-13862989
] 

Anastasis Andronidis commented on HAMA-838:
-------------------------------------------

I agree, but I am worried with setup() registration. Every vertex will try to register the
aggregators, this means that we will have to run lookups to ignore the requests if aggregators
already exist (don't forget the dynamic addition of vertices). Also, maybe we stack with concurrency
problems if a multithreaded version?

> Add custom aggregators
> ----------------------
>
>                 Key: HAMA-838
>                 URL: https://issues.apache.org/jira/browse/HAMA-838
>             Project: Hama
>          Issue Type: Improvement
>          Components: graph
>    Affects Versions: 0.6.3
>            Reporter: Anastasis Andronidis
>            Assignee: Anastasis Andronidis
>              Labels: features, patch
>             Fix For: 0.7.0
>
>         Attachments: HAMA-838.patch
>
>
> This is a patch that adds custom aggregators.
> I also wrote an example of how you can use them.
> Implementation features:
> * Register the aggregators by name.
> * Custom aggregators are skipped when there are no messages to process



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