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https://issues.apache.org/jira/browse/SPARK-5438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14294319#comment-14294319
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Joseph K. Bradley commented on SPARK-5438:
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Note: My use case for this is in LDA:
[https://github.com/apache/spark/pull/4047]
> Graph aggregateMessages should support zero/seqOp/combOp
> --------------------------------------------------------
>
> Key: SPARK-5438
> URL: https://issues.apache.org/jira/browse/SPARK-5438
> Project: Spark
> Issue Type: Improvement
> Components: GraphX
> Affects Versions: 1.3.0
> Reporter: Joseph K. Bradley
> Priority: Minor
>
> It would be nice if Graph.aggregateMessages supported zero/seqOp/combOp (as
> in RDD.aggregate). That would permit some applications to avoid creating
> extra temporary objects.
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