diff --git a/src/mito2/src/read.rs b/src/mito2/src/read.rs
index d8ac5ce46b62..55765099b615 100644
--- a/src/mito2/src/read.rs
+++ b/src/mito2/src/read.rs
@@ -32,6 +32,7 @@ use std::time::Duration;
 
 use api::v1::OpType;
 use async_trait::async_trait;
+use common_telemetry::tracing;
 use common_time::Timestamp;
 use datafusion_common::arrow::array::UInt8Array;
 use datatypes::arrow;
@@ -877,6 +878,7 @@ pub enum Source {
 
 impl Source {
     /// Returns next [Batch] from this data source.
+    #[tracing::instrument(level = tracing::Level::DEBUG, skip_all)]
     pub(crate) async fn next_batch(&mut self) -> Result<Option<Batch>> {
         match self {
             Source::Reader(reader) => reader.next_batch().await,
@@ -910,6 +912,7 @@ pub type BoxedBatchStream = BoxStream<'static, Result<Batch>>;
 
 #[async_trait::async_trait]
 impl<T: BatchReader + ?Sized> BatchReader for Box<T> {
+    #[tracing::instrument(level = tracing::Level::DEBUG, skip_all)]
     async fn next_batch(&mut self) -> Result<Option<Batch>> {
         (**self).next_batch().await
     }
diff --git a/src/mito2/src/read/last_row.rs b/src/mito2/src/read/last_row.rs
index 79d035e03271..7da9009e365a 100644
--- a/src/mito2/src/read/last_row.rs
+++ b/src/mito2/src/read/last_row.rs
@@ -17,6 +17,7 @@
 use std::sync::Arc;
 
 use async_trait::async_trait;
+use common_telemetry::tracing;
 use datatypes::vectors::UInt32Vector;
 use store_api::storage::TimeSeriesRowSelector;
 
@@ -138,6 +139,7 @@ impl RowGroupLastRowCachedReader {
 
 #[async_trait]
 impl BatchReader for RowGroupLastRowCachedReader {
+    #[tracing::instrument(level = tracing::Level::DEBUG, skip_all)]
     async fn next_batch(&mut self) -> Result<Option<Batch>> {
         match self {
             RowGroupLastRowCachedReader::Hit(r) => r.next_batch().await,
diff --git a/src/mito2/src/read/merge.rs b/src/mito2/src/read/merge.rs
index 8060c534052b..576a35735b44 100644
--- a/src/mito2/src/read/merge.rs
+++ b/src/mito2/src/read/merge.rs
@@ -20,7 +20,7 @@ use std::mem;
 use std::time::{Duration, Instant};
 
 use async_trait::async_trait;
-use common_telemetry::debug;
+use common_telemetry::{debug, tracing};
 
 use crate::error::Result;
 use crate::memtable::BoxedBatchIterator;
@@ -276,6 +276,7 @@ impl MergeReaderBuilder {
     }
 
     /// Builds and initializes the reader, then resets the builder.
+    #[tracing::instrument(level = tracing::Level::DEBUG, skip_all)]
     pub async fn build(&mut self) -> Result<MergeReader> {
         let sources = mem::take(&mut self.sources);
         MergeReader::new(sources).await
@@ -313,6 +314,7 @@ impl Node {
     /// Initialize a node.
     ///
     /// It tries to fetch one batch from the `source`.
+    #[tracing::instrument(level = tracing::Level::DEBUG, skip_all)]
     async fn new(mut source: Source, metrics: &mut Metrics) -> Result<Node> {
         // Ensures batch is not empty.
         let start = Instant::now();
diff --git a/src/mito2/src/read/prune.rs b/src/mito2/src/read/prune.rs
index cb0066e73472..d0765d819ddb 100644
--- a/src/mito2/src/read/prune.rs
+++ b/src/mito2/src/read/prune.rs
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+use common_telemetry::tracing;
 use common_time::Timestamp;
 use datatypes::scalars::ScalarVectorBuilder;
 use datatypes::vectors::BooleanVectorBuilder;
@@ -30,6 +31,7 @@ pub enum Source {
 }
 
 impl Source {
+    #[tracing::instrument(level = tracing::Level::DEBUG, skip_all)]
     async fn next_batch(&mut self) -> Result<Option<Batch>> {
         match self {
             Source::RowGroup(r) => r.next_batch().await,
@@ -79,6 +81,7 @@ impl PruneReader {
         }
     }
 
+    #[tracing::instrument(level = tracing::Level::DEBUG, skip_all)]
     pub(crate) async fn next_batch(&mut self) -> Result<Option<Batch>> {
         while let Some(b) = self.source.next_batch().await? {
             match self.prune(b)? {
diff --git a/src/mito2/src/sst/parquet/reader.rs b/src/mito2/src/sst/parquet/reader.rs
index c8c351228023..40d839f4df0c 100644
--- a/src/mito2/src/sst/parquet/reader.rs
+++ b/src/mito2/src/sst/parquet/reader.rs
@@ -1164,6 +1164,7 @@ impl RowGroupReader {
 
 #[async_trait::async_trait]
 impl BatchReader for RowGroupReader {
+    #[tracing::instrument(level = tracing::Level::DEBUG, skip_all)]
     async fn next_batch(&mut self) -> Result<Option<Batch>> {
         let scan_start = Instant::now();
         if let Some(batch) = self.batches.pop_front() {