Github user advancedxy commented on the issue: https://github.com/apache/spark/pull/23083 And another thing: > P.S. This PR does not cover cases with CoGroupedRDDs which use ExternalAppendOnlyMap internally, which itself can lead to OutOfMemoryErrors in many places. So do you mean CoGroupRDDs with multiple input sources with have similar problems? If so, can you create another Jira?
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