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From rxin <...@git.apache.org>
Subject [GitHub] spark pull request: [SPARK-7225][SQL] CombineLimits optimizer does...
Date Thu, 30 Apr 2015 01:42:30 GMT
Github user rxin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/5770#discussion_r29398363
  
    --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/Optimizer.scala
---
    @@ -36,6 +36,13 @@ object DefaultOptimizer extends Optimizer {
         // SubQueries are only needed for analysis and can be removed before execution.
         Batch("Remove SubQueries", FixedPoint(100),
           EliminateSubQueries) ::
    +    Batch("Filter Pushdown", FixedPoint(100),
    +      UnionPushdown,
    +      CombineFilters,
    +      PushPredicateThroughProject,
    +      PushPredicateThroughJoin,
    +      PushPredicateThroughGenerate,
    +      ColumnPruning) ::
         Batch("Combine Limits", FixedPoint(100),
           CombineLimits) ::
    --- End diff --
    
    (and rename "Filter Pushdown" into "Operator Reordering")


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