From ce09fb63138df9fe00af1281e8ee41cc0ad5bb45 Mon Sep 17 00:00:00 2001
From: minwenjun <minwenjun@didichuxing.com>
Date: Sat, 21 Oct 2017 04:11:58 +0800
Subject: [PATCH] fix error in example in get late message in window doc

---
 docs/dev/stream/operators/windows.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/dev/stream/operators/windows.md b/docs/dev/stream/operators/windows.md
index 52c4b479e711b..8b204f8133840 100644
--- a/docs/dev/stream/operators/windows.md
+++ b/docs/dev/stream/operators/windows.md
@@ -1043,7 +1043,7 @@ final OutputTag<T> lateOutputTag = new OutputTag<T>("late-data"){};
 
 DataStream<T> input = ...;
 
-DataStream<T> result = input
+SingleOutputStreamOperator<T> result = input
     .keyBy(<key selector>)
     .window(<window assigner>)
     .allowedLateness(<time>)