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https://issues.apache.org/jira/browse/FLINK-1515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14324128#comment-14324128
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ASF GitHub Bot commented on FLINK-1515:
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Github user martinkiefer commented on the pull request:
https://github.com/apache/flink/pull/402#issuecomment-74660459
I could change `PageRank` to read the number of vertices by broadcasting
the result of `numberofVertices()` instead of providing it in the constructor
of the algorithm. I guess, this is the use case that comes most naturally.
> [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
> Components: Gelly
> Reporter: Vasia Kalavri
> Assignee: Martin Kiefer
>
> 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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