pnowojski commented on code in PR #25222:
URL: https://github.com/apache/flink/pull/25222#discussion_r1724485136
##########
flink-core/src/main/java/org/apache/flink/api/common/eventtime/WatermarkGeneratorSupplier.java:
##########
@@ -54,5 +55,14 @@ interface Context {
* @see MetricGroup
*/
MetricGroup getMetricGroup();
+
+ /**
+ * Returns a {@link RelativeClock} that hides periods when input was
not active and {@link
+ * WatermarkGenerator} could not have been executed due to execution
being blocked by the
+ * runtime. For example a backpressure or watermark alignment blocking
the progress.
+ *
+ * @see RelativeClock
+ */
+ RelativeClock getInputActivityClock();
Review Comment:
I don't know. Maybe someone forgot a release step? Or 1.20 has a better
tuned compatibility checks?
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