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From "Nitay Joffe (JIRA)" <>
Subject [jira] [Updated] (GIRAPH-390) Observer for end of computation on Master
Date Wed, 07 Nov 2012 19:24:13 GMT


Nitay Joffe updated GIRAPH-390:

    Summary: Observer for end of computation on Master  (was: MasterCompute end of application
> Observer for end of computation on Master
> -----------------------------------------
>                 Key: GIRAPH-390
>                 URL:
>             Project: Giraph
>          Issue Type: Improvement
>            Reporter: Nitay Joffe
>            Assignee: Nitay Joffe
>         Attachments: GIRAPH-390-2.patch, GIRAPH-390.patch
> There is no way to run something on the master at the end of the application like in
WorkerContext. This adds a MasterObserver which gets called at the end of the job by the master.
The user can register as many MasterObservers as they like, allowing flexibility.
> I am using this to write the Hadoop counters to a database at the end of the job. As
a part of this I also cleaned up the logic around those counters and made them more easily
accessible by others.

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