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https://issues.apache.org/jira/browse/FLINK-2140?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14590489#comment-14590489
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ASF GitHub Bot commented on FLINK-2140:
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Github user vasia commented on the pull request:
https://github.com/apache/flink/pull/779#issuecomment-112933533
+1, looks good!
> Access the number of vertices from within the GSA functions
> -----------------------------------------------------------
>
> Key: FLINK-2140
> URL: https://issues.apache.org/jira/browse/FLINK-2140
> Project: Flink
> Issue Type: New Feature
> Components: Gelly
> Affects Versions: 0.9
> Reporter: Andra Lungu
> Assignee: Andra Lungu
>
> Similarly to the Vertex-centric approach we would like to allow the user to
> access the number of vertices from the Gather, Sum and Apply functions
> respectively. This property will become available by setting
> [setOptNumVertices()] the numVertices option to true.
> The number of vertices can then be accessed in the gather, sum and apply
> functions using the getNumberOfVertices() method. If the option is not set in
> the configuration, this method will return -1.
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