mxm commented on code in PR #20485:
URL: https://github.com/apache/flink/pull/20485#discussion_r965983501
##########
flink-core/src/main/java/org/apache/flink/api/common/eventtime/CombinedWatermarkStatus.java:
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@@ -95,10 +97,12 @@ public boolean updateCombinedWatermark() {
static class PartialWatermark {
private long watermark = Long.MIN_VALUE;
private boolean idle = false;
+
+ @Nullable
Review Comment:
Agreed.
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