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From dongjoon-hyun <>
Subject [GitHub] spark pull request: [SPARK-14939][SQL] Add FoldablePropagation opt...
Date Thu, 19 May 2016 02:31:52 GMT
Github user dongjoon-hyun commented on the pull request:
    Oops. Analyzing by modifying `checkEvaluation` is not helpful in this case. For example,
          val ret = cast(array_notNull, ArrayType(BooleanType, containsNull = false))
          assert(ret.resolved === false)
          checkEvaluation(ret, Seq(null, true, false))
    The test case is designed to make 'unresolved' case and check the result intentionally.

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