Github user mmalohlava commented on the pull request:
https://github.com/apache/spark/pull/2691#issuecomment-70600014
Sure, let me create PR for this feature.
In meantime, here is a prototype (tailored to our context) - a private
`InvokeOnAllNodesRDD`
(https://github.com/h2oai/sparkling-water/blob/master/core/src/main/scala/org/apache/spark/h2o/InvokeOnNodesRDD.scala)
which is holding information about location of individual partitions.
Nevertheless, in this case i have to provide list of executors in advance - it
is collected based on list of blockmanagers and a few nasty round trips around
actual cluster (not show in the code).
Does it fit to your idea?
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