Tzu-Li (Gordon) Tai created FLINK-9204:
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Summary: Improve visibility of records being skipped by the
`DeserializationSchema` in the Kafka / Kinesis connectors
Key: FLINK-9204
URL: https://issues.apache.org/jira/browse/FLINK-9204
Project: Flink
Issue Type: Improvement
Components: Kafka Connector, Kinesis Connector, Metrics
Reporter: Tzu-Li (Gordon) Tai
Fix For: 1.6.0
Currently, users have to write some log for visibility if they are skipping
some record (by returning {{null}} from the deserialization schema).
We should have better support for this natively in the connectors, either by
adding logs if {{null}} is returned by the user deserialization schema, or
adding counter metrics to track how many records were skipped so far.
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