[hotfix][docs] Stream joins don't support tuple position keys

PangZhi · Nov 23, 2016 · 3458a66 · 3458a66
1 parent 74e0971
commit 3458a66
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/docs/dev/datastream_api.md b/docs/dev/datastream_api.md
@@ -401,7 +401,7 @@ dataStream.union(otherStream1, otherStream2, ...);
             <p>Join two data streams on a given key and a common window.</p>
     {% highlight java %}
 dataStream.join(otherStream)
-    .where(0).equalTo(1)
+    .where(<key selector>).equalTo(<key selector>)
     .window(TumblingEventTimeWindows.of(Time.seconds(3)))
     .apply (new JoinFunction () {...});
     {% endhighlight %}
@@ -750,7 +750,7 @@ dataStream.union(otherStream1, otherStream2, ...)
             <p>Join two data streams on a given key and a common window.</p>
     {% highlight scala %}
 dataStream.join(otherStream)
-    .where(0).equalTo(1)
+    .where(<key selector>).equalTo(<key selector>)
     .window(TumblingEventTimeWindows.of(Time.seconds(3)))
     .apply { ... }
     {% endhighlight %}