[jira] [Updated] (GIRAPH-192) Move aggregators to a seperate sub-package

["Jakob Homan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GIRAPH-192?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jakob Homan updated GIRAPH-192:
-------------------------------

    Affects Version/s: 0.2.0
        Fix Version/s: 0.2.0
             Assignee: Jan van der Lugt
    
> Move aggregators to a seperate sub-package
> ------------------------------------------
>
>                 Key: GIRAPH-192
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-192
>             Project: Giraph
>          Issue Type: Improvement
>          Components: examples
>    Affects Versions: 0.2.0
>            Reporter: Jan van der Lugt
>            Assignee: Jan van der Lugt
>            Priority: Minor
>             Fix For: 0.2.0
>
>         Attachments: GIRAPH-192.patch
>
>   Original Estimate: 2h
>  Remaining Estimate: 2h
>
> Since aggregators will be re-used throughout many projects and algorithms, it makes sense to implement the most common ones in a separate sub-package. This will reduce the time required for users when they implement their projects based on Giraph, because the required aggregators are already in place. I implemented the following ones:
> for int/long/float/double: min, max, product, sum, overwrite
> for boolean: and, or, overwrite
> Most of them speak for themselves, except for the overwrite one. This aggregator simply overwrites the stored value when a new value is aggregated. This is useful when one node is in some way a master node (for example a source node in an routing algorithm), and this node wants to broadcast a value to all other nodes.
> Attached is a patch against trunk implementing the aggregators and patching some existing files so they use the .aggregators package instead of the .examples one.

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