Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/13893#discussion_r68538310
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/PruningSuite.scala
---
@@ -141,6 +141,14 @@ class PruningSuite extends HiveComparisonTest with
BeforeAndAfter {
Seq("2008-04-08", "11"),
Seq("2008-04-09", "11")))
+ createPruningTest("Partition pruning - with nondeterministic fields",
+ "SELECT value, hr FROM srcpart1 WHERE ds = '2008-04-08' AND rand(7) <
1",
--- End diff --
I'm not sure if it's safe to push it down. For non-deterministic
expressions, the order(or number) of input rows matters. If we push down the
deterministic part of filter condition, then the input rows to the remaining
filter condition will change and may result to wrong answer.
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