selectdb-robot opened a new pull request, #68319:
URL: https://github.com/apache/doris/pull/68319
### What problem does this PR solve?
Related PR: #68021
Backport #68021 to `branch-4.1` to prevent NGRAM Bloom Filter pruning from
dropping matching rows when a LIKE pattern contains a backslash or uses a
custom ESCAPE. Escape-free patterns remain eligible for the index.
Cherry-picked from `2fe54ad3516e0638444f91f4581d1127bb48a411`.
One conflict was resolved in `TabletReader::_init_conditions_param`: retain
branch-4.1's `function_filters` loop and `is_like_predicate(pred)` check, and
add `pred->can_do_bloom_filter(true)` to the existing index initialization
guard. The other BE changes and the regression suite are unchanged from the
original patch.
### Validation
- `git diff --check` passed; no unresolved conflicts.
- Verified the patches for `olap_scan_operator.cpp` and
`like_column_predicate.h` match the original commit.
- Verified `test_ngram_bloomfilter_index_like_escape.groovy` is identical to
the original commit.
- Confirmed branch-4.1 already has `LikeState::has_custom_escape`.
- Compilation and runtime regression tests were not run in this session; CI
validation remains pending.
### Release note
Fix incorrect LIKE query results with NGRAM Bloom Filter indexes when the
pattern contains an escape.
### Check List (For Author)
- Test
- [x] Regression test included from #68021 (not executed in this session)
- [ ] Unit Test
- [ ] Manual test
- Behavior changed:
- [x] Yes. Skip NGRAM Bloom Filter pruning for LIKE patterns that can
carry an escape.
- Does this need documentation?
- [x] No.
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label
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