Github user kl0u commented on a diff in the pull request:
https://github.com/apache/flink/pull/3484#discussion_r106163521
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/graph/StreamNode.java
---
@@ -63,6 +66,7 @@
private TypeSerializer<?> typeSerializerIn1;
private TypeSerializer<?> typeSerializerIn2;
private TypeSerializer<?> typeSerializerOut;
+ private Map<OutputTag<?>, TypeSerializer<?>> typeSerializerMap;
--- End diff --
This is not used anywhere in the code. Can it be removed, along with the
`getTypeSerializerOut()` and `setTypeSerializerOut()`?
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