[FLINK-5320] Fix result TypeInformation in WindowedStream.fold

Project: http://git-wip-us.apache.org/repos/asf/flink/repo
Commit: http://git-wip-us.apache.org/repos/asf/flink/commit/ebc13884
Tree: http://git-wip-us.apache.org/repos/asf/flink/tree/ebc13884
Diff: http://git-wip-us.apache.org/repos/asf/flink/diff/ebc13884

Branch: refs/heads/release-1.2
Commit: ebc138841f8f890d47a590496459a0f6f7609d4b
Parents: 6aa38ee
Author: Yassine Marzougui <[email protected]>
Authored: Tue Dec 13 11:05:50 2016 +0100
Committer: Aljoscha Krettek <[email protected]>
Committed: Wed Jan 11 15:47:30 2017 +0100

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 .../org/apache/flink/streaming/api/datastream/WindowedStream.java  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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http://git-wip-us.apache.org/repos/asf/flink/blob/ebc13884/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/datastream/WindowedStream.java
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diff --git 
a/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/datastream/WindowedStream.java
 
b/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/datastream/WindowedStream.java
index 98bf89a..288889c 100644
--- 
a/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/datastream/WindowedStream.java
+++ 
b/flink-streaming-java/src/main/java/org/apache/flink/streaming/api/datastream/WindowedStream.java
@@ -389,7 +389,7 @@ public class WindowedStream<T, K, W extends Window> {
                        Utils.getCallLocationName(), true);
 
                TypeInformation<R> resultType = 
TypeExtractor.getUnaryOperatorReturnType(
-                       function, WindowFunction.class, true, true, 
getInputType(), null, false);
+                       function, WindowFunction.class, true, true, 
foldAccumulatorType, null, false);
 
                return fold(initialValue, foldFunction, function, 
foldAccumulatorType, resultType);
        }

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