salvalcantara commented on code in PR #21186:
URL: https://github.com/apache/flink/pull/21186#discussion_r1007933805
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flink-connectors/flink-connector-kafka/src/test/java/org/apache/flink/connector/kafka/sink/KafkaWriterITCase.java:
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@@ -148,6 +148,13 @@ public void testIncreasingRecordBasedCounters() throws
Exception {
assertThat(numRecordsOutErrors.getCount()).isEqualTo(0);
assertThat(numRecordsSendErrors.getCount()).isEqualTo(0);
+ // A null record is meaningless and should be skipped
+ writer.write(null, SINK_WRITER_CONTEXT);
+ assertThat(numBytesOut.getCount()).isEqualTo(0L);
+ assertThat(numRecordsOut.getCount()).isEqualTo(0);
+ assertThat(numRecordsOutErrors.getCount()).isEqualTo(0);
+ assertThat(numRecordsSendErrors.getCount()).isEqualTo(0);
+
Review Comment:
Isn't this enough @MartijnVisser for testing the changes? I can consider a
separate test for the null records exclusively but the existing
`testIncreasingRecordBasedCounters` looks like a good spot to me.
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