Github user gatorsmile commented on the pull request:
https://github.com/apache/spark/pull/10451#issuecomment-167202389
@cloud-fan Just added a quick fix by introducing a stop flag to avoid
adding extra `Limit` in the subsequent iteration, but I am not sure if my way
is good.
After reading the code, maybe another way is using what we did for the flag
`_analyzed`, as shown in the following codes:
https://github.com/apache/spark/blob/master/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala/#L30-L35
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