Revert "Support split non-AST-able join condition for BroadcastNested…

…LoopJoin (NVIDIA#9635)"

This reverts commit c20a843.

Signed-off-by: Ferdinand Xu <ferdinandx@nvidia.com>

integration_tests/src/main/python/join_test.py

@@ -14,7 +14,7 @@
 
 import pytest
 from _pytest.mark.structures import ParameterSet
-from pyspark.sql.functions import array_contains, broadcast, col
+from pyspark.sql.functions import broadcast, col
 from pyspark.sql.types import *
 from asserts import assert_gpu_and_cpu_are_equal_collect, assert_gpu_fallback_collect, assert_cpu_and_gpu_are_equal_collect_with_capture
 from conftest import is_databricks_runtime, is_emr_runtime
@@ -397,47 +397,17 @@ def do_join(spark):
         return left.join(broadcast(right), left.a > f.log(right.r_a), join_type)
     assert_gpu_and_cpu_are_equal_collect(do_join)
 
-@ignore_order(local=True)
-@pytest.mark.parametrize('data_gen', [IntegerGen(), LongGen(), pytest.param(FloatGen(), marks=[incompat]), pytest.param(DoubleGen(), marks=[incompat])], ids=idfn)
-@pytest.mark.parametrize('join_type', ['Cross', 'Left', 'LeftSemi', 'LeftAnti'], ids=idfn)
-def test_broadcast_nested_loop_join_with_condition(data_gen, join_type):
-    def do_join(spark):
-        left, right = create_df(spark, data_gen, 50, 25)
-        # AST does not support cast or logarithm yet which is supposed to be extracted into child
-        # nodes. And this test doesn't cover other join types due to:
-        #    (1) build right are not supported for Right
-        #    (2) FullOuter: currently is not supported
-        # Those fallback reasons are not due to AST. Additionally, this test case changes test_broadcast_nested_loop_join_with_condition_fallback:
-        #    (1) adapt double to integer since AST current doesn't support it.
-        #    (2) switch to right side build to pass checks of 'Left', 'LeftSemi', 'LeftAnti' join types
-        return left.join(broadcast(right), f.round(left.a).cast('integer') > f.round(f.log(right.r_a).cast('integer')), join_type)
-    assert_gpu_and_cpu_are_equal_collect(do_join, conf={"spark.rapids.sql.castFloatToIntegralTypes.enabled": True})
-
 @allow_non_gpu('BroadcastExchangeExec', 'BroadcastNestedLoopJoinExec', 'Cast', 'GreaterThan', 'Log')
 @ignore_order(local=True)
 @pytest.mark.parametrize('data_gen', [IntegerGen(), LongGen(), pytest.param(FloatGen(), marks=[incompat]), pytest.param(DoubleGen(), marks=[incompat])], ids=idfn)
 @pytest.mark.parametrize('join_type', ['Left', 'Right', 'FullOuter', 'LeftSemi', 'LeftAnti'], ids=idfn)
 def test_broadcast_nested_loop_join_with_condition_fallback(data_gen, join_type):
     def do_join(spark):
         left, right = create_df(spark, data_gen, 50, 25)
-        # AST does not support double type which is not split-able into child nodes.
+        # AST does not support cast or logarithm yet
         return broadcast(left).join(right, left.a > f.log(right.r_a), join_type)
     assert_gpu_fallback_collect(do_join, 'BroadcastNestedLoopJoinExec')
 
-@ignore_order(local=True)
-@pytest.mark.parametrize('data_gen', [byte_gen, short_gen, int_gen, long_gen,
-                                      float_gen, double_gen,
-                                      string_gen, boolean_gen, date_gen, timestamp_gen], ids=idfn)
-@pytest.mark.parametrize('join_type', ['Left', 'Right', 'FullOuter', 'LeftSemi', 'LeftAnti'], ids=idfn)
-def test_broadcast_nested_loop_join_with_array_contains(data_gen, join_type):
-    arr_gen = ArrayGen(data_gen)
-    literal = with_cpu_session(lambda spark: gen_scalar(data_gen))
-    def do_join(spark):
-        left, right = create_df(spark, arr_gen, 50, 25)
-        # Array_contains will be pushed down into project child nodes
-        return broadcast(left).join(right, array_contains(left.a, literal.cast(data_gen.data_type)) < array_contains(right.r_a, literal.cast(data_gen.data_type)))
-    assert_gpu_and_cpu_are_equal_collect(do_join)
-
 @ignore_order(local=True)
 @pytest.mark.parametrize('data_gen', all_gen, ids=idfn)
 @pytest.mark.parametrize('join_type', ['Left', 'LeftSemi', 'LeftAnti'], ids=idfn)

sql-plugin/src/main/scala/com/nvidia/spark/rapids/RapidsMeta.scala

@@ -1115,15 +1115,6 @@ abstract class BaseExprMeta[INPUT <: Expression](
     childExprs.forall(_.canThisBeAst) && cannotBeAstReasons.isEmpty
   }
 
-  /**
-   * Check whether this node itself can be converted to AST. It will not recursively check its
-   * children. It's used to check join condition AST-ability in top-down fashion.
-   */
-  lazy val canSelfBeAst = {
-    tagForAst()
-    cannotBeAstReasons.isEmpty
-  }
-
   final def requireAstForGpu(): Unit = {
     tagForAst()
     cannotBeAstReasons.foreach { reason =>

sql-plugin/src/main/scala/org/apache/spark/sql/rapids/catalyst/expressions/GpuEquivalentExpressions.scala

@@ -240,22 +240,6 @@ class GpuEquivalentExpressions {
 }
 
 object GpuEquivalentExpressions {
-  /**
-   * Recursively replaces semantic equal expression with its proxy expression in `substitutionMap`.
-   */
-  def replaceWithSemanticCommonRef(
-      expr: Expression,
-      substitutionMap: mutable.HashMap[GpuExpressionEquals, Expression]): Expression = {
-    expr match {
-      case e: AttributeReference => e
-      case _ =>
-        substitutionMap.get(GpuExpressionEquals(expr)) match {
-          case Some(attr) => attr
-          case None => expr.mapChildren(replaceWithSemanticCommonRef(_, substitutionMap))
-        }
-    }
-  }
-
   /**
    * Recursively replaces expression with its proxy expression in `substitutionMap`.
    */