Github user Aitozi commented on a diff in the pull request:
https://github.com/apache/flink/pull/4665#discussion_r138778844
--- Diff:
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/operators/windowing/WindowOperator.java
---
@@ -132,6 +133,13 @@
*/
protected final OutputTag<IN> lateDataOutputTag;
+ /**
+ * Metrics about the lost data due to arrive late.
+ * */
+ protected final String loseData = "lost_data";
+
+ protected Counter lostDataCount;
--- End diff --
@zentol i have adjust my code according the comment, and add the doc
about this metrics, please review again, thanks
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