Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/5369#discussion_r27808307
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/sources/FilteredScanSuite.scala ---
@@ -233,6 +258,73 @@ class FilteredScanSuite extends DataSourceTest {
testPushDown("SELECT a, b, c FROM oneToTenFiltered WHERE c like '%eE%'",
1)
testPushDown("SELECT a, b, c FROM oneToTenFiltered WHERE c like '%Ee%'",
0)
+
+ // Filter should not be duplicate with pushdown predicate
+ // This query should not have Filter node and have 1 row
+ testNotFilter("SELECT a, b FROM oneToTenFiltered WHERE a = 1", 1)
+ // This query have Filter node which filters 10 rows to 1 row
+ testFilter("SELECT a, b FROM oneToTenFiltered WHERE b = 2", 10, 1)
+
+ def testNotFilter(sqlString: String, count: Int): Unit = {
+ test(s"Without Filter: $sqlString") {
+ val queryExecution = sql(sqlString).queryExecution
+ val filterPlan = queryExecution.executedPlan.collect {
+ case f: execution.Filter => f
+ } match {
+ case Seq(f) => fail(s"Shouldn't find Filter\n$queryExecution")
+ case _ =>
+ }
+
+ val physicalRDDPlan = queryExecution.executedPlan.collect {
+ case p: execution.PhysicalRDD => p
+ } match {
+ case Seq(p) => p
+ case _ => fail(s"Can't find PhysicalRDD\n$queryExecution")
+ }
--- End diff --
Oh I see, you're checking whether the filter is pushed down here. Good
point.
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