From 7f6980a0186cde2a23a6f9537845bf108f4b0818 Mon Sep 17 00:00:00 2001 From: xinyunh Date: Thu, 14 Aug 2014 16:10:28 -0700 Subject: [PATCH] fix the bug in 'Last' component --- .../apache/spark/sql/catalyst/expressions/aggregates.scala | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregates.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregates.scala index 47338a2e92eac..f519d96963e1c 100755 --- a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregates.scala +++ b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregates.scala @@ -511,9 +511,7 @@ case class LastFunction(expr: Expression, base: AggregateExpression) extends Agg var result: Any = null override def update(input: Row): Unit = { - if (result == null) { - result = input - } + result = input } override def eval(input: Row): Any = if (result != null) expr.eval(result.asInstanceOf[Row]) else null