AHeise commented on a change in pull request #16271:
URL: https://github.com/apache/flink/pull/16271#discussion_r660444678
##########
File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/AbstractStreamOperator.java
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@@ -335,7 +335,11 @@ public void open() throws Exception {}
* @throws Exception An exception in this method causes the operator to
fail.
*/
@Override
- public void close() throws Exception {}
+ public void close() throws Exception {
+ if (output != null) {
+ output.close();
+ }
+ }
Review comment:
Yes, I agree.
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