[SPARK-15639][SQL] Try to push down filter at RowGroups level for parquet reader

## What changes were proposed in this pull request?

The base class `SpecificParquetRecordReaderBase` used for vectorized parquet reader will try to get pushed-down filters from the given configuration. This pushed-down filters are used for RowGroups-level filtering. However, we don't set up the filters to push down into the configuration. In other words, the filters are not actually pushed down to do RowGroups-level filtering. This patch is to fix this and tries to set up the filters for pushing down to configuration for the reader.

## How was this patch tested?
Existing tests should be passed.

Author: Liang-Chi Hsieh <simonh@tw.ibm.com>

Closes #13371 from viirya/vectorized-reader-push-down-filter.

1 files changed, 8 insertions, 0 deletions

diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala
index 306a99d5a3..c06a1ea356 100644
--- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala
+++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala
@@ -292,6 +292,14 @@ case class AttributeReference(
     }
   }
 
+  def withMetadata(newMetadata: Metadata): AttributeReference = {
+    if (metadata == newMetadata) {
+      this
+    } else {
+      AttributeReference(name, dataType, nullable, newMetadata)(exprId, qualifier, isGenerated)
+    }
+  }
+
   override protected final def otherCopyArgs: Seq[AnyRef] = {
     exprId :: qualifier :: isGenerated :: Nil
   }