[jira] [Created] (FLINK-1515) [Gelly] Enable access to aggregators and broadcast sets in vertex-centric iteration

["Vasia Kalavri (JIRA)" <ji...@apache.org>]

Vasia Kalavri created FLINK-1515:
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             Summary: [Gelly] Enable access to aggregators and broadcast sets in vertex-centric iteration
                 Key: FLINK-1515
                 URL: https://issues.apache.org/jira/browse/FLINK-1515
             Project: Flink
          Issue Type: Improvement
            Reporter: Vasia Kalavri


Currently, aggregators and broadcast sets cannot be accessed through Gelly's  {{runVertexCentricIteration}} method. The functionality is already present in the {{VertexCentricIteration}} and we just need to expose it.

This could be done like this: We create a method {{createVertexCentricIteration}}, which will return a {{VertexCentricIteration}} object and we change {{runVertexCentricIteration}} to accept this as a parameter (and return the graph after running this iteration).
The user can configure the {{VertexCentricIteration}} by directly calling the public methods {{registerAggregator}}, {{setName}}, etc.



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