Github user tzulitai commented on a diff in the pull request:
https://github.com/apache/flink/pull/4187#discussion_r127636523
--- Diff:
flink-connectors/flink-connector-kafka-base/src/main/java/org/apache/flink/streaming/connectors/kafka/FlinkKafkaConsumerBase.java
---
@@ -185,6 +187,18 @@
private volatile boolean running = true;
//
------------------------------------------------------------------------
+ // internal metrics
+ //
------------------------------------------------------------------------
+
+ /** Counter for successful Kafka offset commits. */
+ private transient Counter successfulCommits;
+
+ /** Counter for failed Kafka offset commits. */
+ private transient Counter failedCommits;
+
+ private transient KafkaCommitCallback offsetCommitCallback;
--- End diff --
Can you include a Javadoc for this too? (for consistency)
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