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Marko A. Rodriguez commented on TINKERPOP-1120:
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I've taken this ticket a bit further and if there are no views or messages, the
the vertex data is NOT included in the {{reduceByKey}}. In
{{TraversalVertexProgram}}, this makes the final step cost "nothing" as there
is nothing to reduce on.
> If there is no view nor messages, don't create empty views/messages in
> SparkExecutor
> ------------------------------------------------------------------------------------
>
> Key: TINKERPOP-1120
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1120
> Project: TinkerPop
> Issue Type: Improvement
> Components: process
> Affects Versions: 3.1.1-incubating
> Reporter: Marko A. Rodriguez
> Fix For: 3.2.1
>
>
> Doing a simple identity mapping and noticing that I'm creating empty view and
> message data! pointless. If there is no view or message for the current
> vertex, don't emit an empty view/message.
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