Github user markhamstra commented on the pull request:
https://github.com/apache/spark/pull/11986#issuecomment-202071373
It is not at all clear to me from either this PR or your insufficient JIRA
why you think it is valid to ignore all of the cache logic in the
MapOutputTracker and instead always take the "failed to find the serialized
locations in the cache" path. What you have submitted so far is entirely
inadequate to motivate or explain this significant change.
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