Shally-Katariya opened a new pull request, #21371:
URL: https://github.com/apache/kafka/pull/21371
### Motivation
The Deserializer interface currently does not clearly specify how a
`ByteBuffer`'s
`position` and `limit` should be treated during and after deserialization.
This ambiguity can lead to inconsistent implementations and incorrect
assumptions
by callers.
### Changes
- Clarified the contract for `Deserializer#deserialize(String, Headers,
ByteBuffer)`
to state that implementations should read from the buffer’s current
position,
may advance the position by the number of bytes consumed, and must not
modify
the buffer limit.
- Documented that callers should not make assumptions about the buffer
position
after deserialization.
### Notes
This change is documentation-only and does not modify runtime behavior.
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