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Posted to issues@paimon.apache.org by "ArnavBalyan (via GitHub)" <gi...@apache.org> on 2026/07/15 17:03:10 UTC
[PR] [format] Optimize Vectorized readBytes with direct array access for heap buffers [paimon]
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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Re: [PR] [format] Optimize Vectorized readBytes with direct array access for heap buffers [paimon]
Posted by "JingsongLi (via GitHub)" <gi...@apache.org>.
JingsongLi commented on PR #8673:
URL: https://github.com/apache/paimon/pull/8673#issuecomment-4988466128
+1
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Re: [PR] [format] Optimize Vectorized readBytes with direct array access for heap buffers [paimon]
Posted by "JingsongLi (via GitHub)" <gi...@apache.org>.
JingsongLi merged PR #8673:
URL: https://github.com/apache/paimon/pull/8673
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