nileshkumar3 opened a new pull request, #22495:
URL: https://github.com/apache/kafka/pull/22495

   ## Summary
   Fixes [KAFKA-20657](https://issues.apache.org/jira/browse/KAFKA-20657).
   Kafka Connect `BYTES` values may be represented as either `byte[]` or 
`ByteBuffer`.
   `JsonConverter` serialized `ByteBuffer` values using `.array()`, which:
   - Ignores `position()` / `limit()` and serializes the full backing array for 
sliced heap buffers (wrong payload)
   - Throws `UnsupportedOperationException` for direct buffers (no backing 
array)
   Use `Utils.toArray(ByteBuffer)` instead, matching `Values.convertToBytes()` 
and reading the buffer's logical remaining bytes for both heap-backed and 
direct buffers.
   


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