mxm commented on a change in pull request #12759:
URL: https://github.com/apache/beam/pull/12759#discussion_r484955004
##########
File path:
runners/flink/src/main/java/org/apache/beam/runners/flink/translation/wrappers/streaming/state/FlinkStateInternals.java
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@@ -114,16 +129,26 @@ public K getKey() {
return address.getSpec().bind(address.getId(), new
FlinkStateBinder(namespace, context));
}
- public void clearBagStates(StateNamespace namespace, StateTag<? extends
BagState> address)
- throws Exception {
- CoderTypeSerializer typeSerializer = new
CoderTypeSerializer<>(VoidCoder.of());
- flinkStateBackend.applyToAllKeys(
- namespace.stringKey(),
- StringSerializer.INSTANCE,
- new ListStateDescriptor<>(address.getId(), typeSerializer),
- (key, state) -> {
- state.clear();
- });
+ /**
+ * Allows to clear all state for the global watermark when the maximum
watermark arrives. We do
+ * not clean up the global window state via timers which would lead to an
unbounded number of keys
+ * and cleanup timers. Instead, the cleanup code below should be run when we
finally receive the
+ * max watermark.
+ */
+ public void clearGlobalState() {
Review comment:
I think it has to be because this is called from outside of the `state`
package.
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