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From "Edward J. Yoon (Commented) (JIRA)" <>
Subject [jira] [Commented] (HAMA-458) Add Combiners
Date Fri, 21 Oct 2011 04:50:33 GMT


Edward J. Yoon commented on HAMA-458:

If possible, let's schedule to 0.4
> Add Combiners
> -------------
>                 Key: HAMA-458
>                 URL:
>             Project: Hama
>          Issue Type: New Feature
>            Reporter: Thomas Jungblut
> We have spoken about it on the mailing list:
> Small extract:
> {quote}
> When should the combiner be called and in which form. In MapReduce they
> are plain reducers, so we can have the same model but not grouped by a key
> rather than the class name of the message.
> {quote}
> Especially if we could collect all task data on the same host and combine them. This
would yield into better performance.
> We need a smart idea. 

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