ArnavBalyan opened a new pull request, #8371:
URL: https://github.com/apache/paimon/pull/8371
### Purpose:
- Add a reverse btree global index that stores keys byte reversed
(ReversedKeySerializer), converting a suffix query into a prefix scan since
value.endsWith(s) reverse(value).startsWith(reverse(s)).
- ReverseLazyFilteredBTreeReader routes endsWith and LIKE '%abc' through
the existing prefix scan, and uses min/max pruning instead of full scan.
- Reuses the existing btree file format (only key bytes are reversed). In
the future more complex like clauses can be offloaded in combination with the
straight btree index.
### Tests
- Unit Tests
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