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From Jean-Baptiste Onofré (JIRA) <>
Subject [jira] [Assigned] (BEAM-649) Pipeline "actions" should use foreachRDD via ParDo.
Date Sun, 27 Nov 2016 13:53:58 GMT


Jean-Baptiste Onofré reassigned BEAM-649:

    Assignee: Jean-Baptiste Onofré

> Pipeline "actions" should use foreachRDD via ParDo.
> ---------------------------------------------------
>                 Key: BEAM-649
>                 URL:
>             Project: Beam
>          Issue Type: Improvement
>          Components: runner-spark
>            Reporter: Amit Sela
>            Assignee: Jean-Baptiste Onofré
> Spark will execute a pipeline ONLY if it's triggered by an action (batch) / output operation
(streaming) -
> Currently, such actions in Beam are mostly implemented via ParDo, and translated by the
runner as a Map transformation (via mapPartitions).
> The runner overcomes this by "forcing" actions on untranslated leaves.
> While this is OK, it would be better in some cases, e.g., Sinks, to apply the same ParDo
translation but with foreach/foreachRDD instead of foreachPartition/mapPartitions.

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