Github user wesolowskim commented on the issue: https://github.com/apache/spark/pull/14137 I don't know if I understand you correctly. Last work RDD is explicitly materialized because iteration's depend on number of vertices left in graph. My aim with latest solution was to leave algorithm with persisted graph at the and and not to add any additional unpersisted unwanted rdds. I would be nice to have everything cleaned, but since it is tricky I'd like to work on it some time later.
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