salvalcantara commented on code in PR #21186:
URL: https://github.com/apache/flink/pull/21186#discussion_r1009054195
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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 +148,15 @@ public void testIncreasingRecordBasedCounters() throws
Exception {
assertThat(numRecordsOutErrors.getCount()).isEqualTo(0);
assertThat(numRecordsSendErrors.getCount()).isEqualTo(0);
+ // elements that cannot be serialized should be silently skipped
Review Comment:
Agreed. Maybe something along these lines?
```suggestion
// elements for which the serializer returns null should be
silently skipped
```
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