ci: instrument a few functions involved in btree search

rust/lance-index/src/scalar/btree.rs

@@ -62,7 +62,7 @@ use rangemap::RangeInclusiveMap;
 use roaring::RoaringBitmap;
 use serde::{Deserialize, Serialize, Serializer};
 use snafu::location;
-use tracing::info;
+use tracing::{info, instrument};
 
 mod flat;
 
@@ -1044,6 +1044,7 @@ impl BTreeIndex {
             .await
     }
 
+    #[instrument(level = "debug", skip_all)]
     async fn read_page(
         &self,
         page_number: u32,
@@ -1090,6 +1091,7 @@ impl BTreeIndex {
         }
     }
 
+    #[instrument(level = "debug", skip_all)]
     fn try_from_serialized(
         data: RecordBatch,
         store: Arc<dyn IndexStore>,

rust/lance-index/src/scalar/btree/flat.rs

@@ -18,6 +18,7 @@ use lance_core::utils::address::RowAddress;
 use lance_core::utils::mask::{NullableRowAddrSet, RowAddrTreeMap};
 use lance_core::Result;
 use roaring::RoaringBitmap;
+use tracing::instrument;
 
 use crate::metrics::MetricsCollector;
 use crate::scalar::btree::BTREE_VALUES_COLUMN;
@@ -46,6 +47,7 @@ impl DeepSizeOf for FlatIndex {
 }
 
 impl FlatIndex {
+    #[instrument(name = "FlatIndex::try_new", level = "debug", skip_all)]
     pub fn try_new(data: RecordBatch) -> Result<Self> {
         // Sort by row id to make bitmap construction more efficient
         let data = data.sort_by_column(IDS_COL_IDX, None)?;

rust/lance/src/index.rs

@@ -1268,6 +1268,7 @@ impl DatasetIndexInternalExt for Dataset {
         }
     }
 
+    #[instrument(level = "debug", skip_all)]
     async fn open_scalar_index(
         &self,
         column: &str,