Marcel Kornacker c02d25baa8 IMPALA-20: Limit clause in inline view not handled correctly by planner ...

- this adds a SelectNode that evaluates conjuncts and enforces the limit
- all limits are now distributed: enforced both by the child plan fragment and
  by the merging ExchangeNode
- all limits w/ Order By are now distributed: enforced both by the child plan fragment and
  by the merging TopN node

2014-01-08 10:48:29 -08:00

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