Github user phalodi commented on the issue: https://github.com/apache/spark/pull/14104 @srowen yeah you are right its not blocking calling thread but they execute sequentially right but in async action its return future so its running on different threads soo not run sequentially soo its fully non blocking example if i have action in that we have some transformation like map n inside map i have blocking code then how its work its block or not?
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