Merge branch 'rightlib' into merge-libs-250111-0020

1 files changed, 12 insertions, 0 deletions

diff --git a/yql/essentials/public/udf/arrow/util.cpp b/yql/essentials/public/udf/arrow/util.cpp
index 55a728207b2..b36b4f9ce51 100644
--- a/yql/essentials/public/udf/arrow/util.cpp
+++ b/yql/essentials/public/udf/arrow/util.cpp
@@ -68,6 +68,18 @@ std::shared_ptr<arrow::Buffer> MakeDenseBitmapNegate(const ui8* srcSparse, size_
     return bitmap;
 }
 
+std::shared_ptr<arrow::Buffer> MakeDenseBitmapCopy(const ui8* src, size_t len, size_t offset, arrow::MemoryPool* pool) {
+    auto bitmap = AllocateBitmapWithReserve(len, pool);
+    CopyDenseBitmap(bitmap->mutable_data(), src, offset, len);
+    return bitmap;
+}
+
+std::shared_ptr<arrow::Buffer> MakeDenseFalseBitmap(int64_t len, arrow::MemoryPool* pool) {
+    auto bitmap = AllocateBitmapWithReserve(len, pool);
+    std::memset(bitmap->mutable_data(), 0, bitmap->size());
+    return bitmap;
+}
+
 std::shared_ptr<arrow::ArrayData> DeepSlice(const std::shared_ptr<arrow::ArrayData>& data, size_t offset, size_t len) {
     Y_ENSURE(data->length >= 0);
     Y_ENSURE(offset + len <= (size_t)data->length);