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fix: revert pre-filter bitset usage for ngram (#46987)

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issue: https://github.com/milvus-io/milvus/issues/46813
Pre-filter bitset is for batch size while ngram used it as segment size
bitset.
Revert it first.

Signed-off-by: SpadeA <tangchenjie1210@gmail.com>
This commit is contained in:
Spade A
2026-01-12 17:01:27 +08:00
committed by GitHub
parent f6f0f34372
commit c86ea98b8b
1 changed files with 1 additions and 7 deletions
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internal/core/src/exec/expression/UnaryExpr.cpp
+1 -7
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@@ -1912,14 +1912,8 @@ PhyUnaryRangeFilterExpr::ExecNgramMatch(EvalCtx& context) {
"ngram index should not be null, field_id: {}",
field_id_.get());
// Get pre_filter from previous expressions in the conjunction.
// This optimization reduces the number of rows that need post-filtering.
const auto& bitmap_input = context.get_bitmap_input();
const TargetBitmap* pre_filter =
bitmap_input.empty() ? nullptr : &bitmap_input;
auto res_opt =
index->ExecuteQuery(literal, expr_->op_type_, this, pre_filter);
index->ExecuteQuery(literal, expr_->op_type_, this, nullptr);
if (!res_opt.has_value()) {
return std::nullopt;
}