Amit Sela created BEAM-649:
Summary: Pipeline "actions" should use foreachRDD via ParDo.
Issue Type: Bug
Reporter: Amit Sela
Assignee: Amit Sela
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
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