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https://issues.apache.org/jira/browse/HAMA-838?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Edward J. Yoon updated HAMA-838:
--------------------------------
Attachment: patch.txt
This patch adds aggregate(int index, M value) and getAggregatedValue(int index)
methods to Vertex interface.
We can refactor aggregator interface without heavy changes like:
{code}
@Override
public void aggregate(int index, M value) throws IOException {
this.runner.getAggregationRunner().aggregateVertex(index, oldValue, value);
}
{code}
We can use the aggregator name instead of index.
> 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, HAMA-838_v02.patch, patch.txt
>
>
> 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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