Github user mengxr commented on the pull request:
https://github.com/apache/spark/pull/929#issuecomment-45067410
I don't think checkpointing every 3 iterations is a good choice. Could you
try different values, e.g., 3 and 20, and check the running times? Also, it
doesn't solve the StackOverflow problem because you need to materialize the
RDDs explicitly to cut the lineage.
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