ArnavBalyan opened a new pull request, #8673:
URL: https://github.com/apache/paimon/pull/8673
### Purpose
- ReadBytes decodes Tinyint, stored as 4 byte little endian, and reads
through the ByteBuffer with buffer.get() + a manual position(+3) skip on every
value, which is expensive due to bounds check and a position modify per element.
- This adds a fast path for heap backed buffers that reads straight from
the backing byte[] via array[offset + i*4] with no cursor overhead of ByteBuffer
- The original loop is retained as a fallback for direct buffer.
- Decode output is byte identical, there is no API or format change.
### Tests
- Existing UT
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