Github user aljoscha commented on a diff in the pull request:
https://github.com/apache/flink/pull/659#discussion_r29855036
--- Diff:
flink-staging/flink-streaming/flink-streaming-core/src/main/java/org/apache/flink/streaming/api/operators/windowing/StreamDiscretizer.java
---
@@ -183,6 +173,16 @@ public void
open(org.apache.flink.configuration.Configuration parameters) throws
}
}
+ @Override
+ public void close() throws Exception {
+ super.close();
+ if (activePolicyThread != null) {
+ activePolicyThread.interrupt();
+ }
+
+ emitWindow();
--- End diff --
I think it's fine in streaming. open(), receiveElement(), close() are all
called in the inner loop of StreamTask.invoke()
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