[SPARK-4693] [SQL] PruningPredicates may be wrong if predicates contains an empty AttributeSet() references

YanTangZhai · YanTangZhai · commit 620ebe3df79f · 2014-12-18T16:51:21.000+08:00
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/AttributeSet.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/AttributeSet.scala
@@ -113,5 +113,5 @@ class AttributeSet private (val baseSet: Set[AttributeEquals])
 
   override def toString = "{" + baseSet.map(_.a).mkString(", ") + "}"
 
-  def isEmpty: Boolean = baseSet.isEmpty
+  override def isEmpty: Boolean = baseSet.isEmpty
 }

Original file line number	Diff line number	Diff line change
`@@ -113,5 +113,5 @@ class AttributeSet private (val baseSet: Set[AttributeEquals])`
`113`	`113`
`114`	`114`	`override def toString = "{" + baseSet.map(_.a).mkString(", ") + "}"`
`115`	`115`
`116`		`- def isEmpty: Boolean = baseSet.isEmpty`
	`116`	`+ override def isEmpty: Boolean = baseSet.isEmpty`
`117`	`117`	`}`