Jakub created KAFKA-10103:
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Summary: JDBC Sink Connector doesn't support numerical values in
event keys
Key: KAFKA-10103
URL: https://issues.apache.org/jira/browse/KAFKA-10103
Project: Kafka
Issue Type: Bug
Components: KafkaConnect
Affects Versions: 2.0.1
Reporter: Jakub
Our topics contain events with numerical keys and Avro values. We're trying to
configure a JDBC connector to export data from these topics to Oracle DB, but
it doesn't seem to work.
If we use strings as keys everything works fine, but if we switch to Longs it
stops working. We tried different values of _key.converter_, including
_org.apache.kafka.connect.converters.ByteArrayConverter,_ but either parsing of
keys doesn't work, or they cannot be mapped to Oracle data type (NUMBER - this
happens if we use _ByteArrayConverter)._
We also tried using transformations (CAST), but in that case we're getting
_Cast transformation does not support casting to/from BYTES_
Please excuse if this is not a bug and there is a way to work with numerical
keys, we just couldn't find anything about that in the documentation.
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