Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/2188#discussion_r17030789
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/columnar/InMemoryColumnarTableScan.scala
---
@@ -96,13 +103,95 @@ private[sql] case class InMemoryRelation(
private[sql] case class InMemoryColumnarTableScan(
attributes: Seq[Attribute],
+ predicates: Seq[Expression],
relation: InMemoryRelation)
extends LeafNode {
override def output: Seq[Attribute] = attributes
+ import org.apache.spark.sql.catalyst.dsl.expressions._
+ import org.apache.spark.sql.catalyst.expressions._
+
+ val buildFilter: PartialFunction[Expression, Expression] = {
--- End diff --
Can we document the contract for these filters? "Returns false iff it is
impossible for the input expression to evaluate to true based on statistics
collected about this partition"?
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