[GitHub] spark pull request: [SPARK-10316][SQL] respect nondeterministic ex...

[cloud-fan <gi...@git.apache.org>]

Github user cloud-fan commented on a diff in the pull request:

    https://github.com/apache/spark/pull/8486#discussion_r38393705
  
    --- Diff: sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/planning/patterns.scala ---
    @@ -26,27 +24,6 @@ import org.apache.spark.sql.catalyst.plans._
     import org.apache.spark.sql.catalyst.plans.logical._
     
     /**
    - * A pattern that matches any number of filter operations on top of another relational operator.
    - * Adjacent filter operators are collected and their conditions are broken up and returned as a
    - * sequence of conjunctive predicates.
    - *
    - * @return A tuple containing a sequence of conjunctive predicates that should be used to filter the
    - *         output and a relational operator.
    - */
    -object FilteredOperation extends PredicateHelper {
    --- End diff --
    
    The `FilteredOperation` is not used anywhere.


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