Github user sjwiesman commented on a diff in the pull request:
https://github.com/apache/flink/pull/3479#discussion_r104492162
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/operators/windowing/functions/InternalWindowFunction.java
---
@@ -39,5 +40,31 @@
* @param out A collector for emitting elements.
* @throws Exception The function may throw exceptions to fail the
program and trigger recovery.
*/
+ @Deprecated
void apply(KEY key, W window, IN input, Collector<OUT> out) throws
Exception;
--- End diff --
I noticed an issue when removing apply. The method is used inside of
AccumulatingKeyedTimePanes which takes in an AbstractStreamOperator as an
argument to its evaluateWindow method. When creating the context I can get the
global keyed state backend from the operator, but not the partitioned state
because those methods are protected. Now the only two uses of this class are
its subclasses which have both been deprecated. My question is, do you think I
should modify the evaluateWindow method to accept a keyed state store which
wraps the operator partitioned state or just throw an exception on
context.windowState() because all valid uses of this method have been
deprecated?
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