diff --git a/src/storage/src/hummock/event_handler/uploader.rs b/src/storage/src/hummock/event_handler/uploader.rs
index f768aa23dcd89..5878b14730083 100644
--- a/src/storage/src/hummock/event_handler/uploader.rs
+++ b/src/storage/src/hummock/event_handler/uploader.rs
@@ -35,7 +35,7 @@ use risingwave_common::must_match;
 use risingwave_hummock_sdk::table_watermark::{
     TableWatermarks, VnodeWatermark, WatermarkDirection,
 };
-use risingwave_hummock_sdk::{CompactionGroupId, HummockEpoch, LocalSstableInfo, SyncResult};
+use risingwave_hummock_sdk::{HummockEpoch, LocalSstableInfo, SyncResult};
 use thiserror_ext::AsReport;
 use tokio::sync::oneshot;
 use tokio::task::JoinHandle;
@@ -84,7 +84,6 @@ pub struct UploadTaskInfo {
     pub task_size: usize,
     pub epochs: Vec<HummockEpoch>,
     pub imm_ids: HashMap<LocalInstanceId, Vec<ImmId>>,
-    pub compaction_group_index: Arc<HashMap<TableId, CompactionGroupId>>,
 }
 
 impl Display for UploadTaskInfo {
@@ -241,7 +240,6 @@ impl UploadingTask {
             task_size,
             epochs,
             imm_ids,
-            compaction_group_index: context.pinned_version.compaction_group_index(),
         };
         context
             .buffer_tracker
diff --git a/src/storage/src/hummock/local_version/pinned_version.rs b/src/storage/src/hummock/local_version/pinned_version.rs
index 5e89a135d825c..4926914a44004 100644
--- a/src/storage/src/hummock/local_version/pinned_version.rs
+++ b/src/storage/src/hummock/local_version/pinned_version.rs
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-use std::collections::{BTreeMap, HashMap};
+use std::collections::BTreeMap;
 use std::iter::empty;
 use std::sync::Arc;
 use std::time::{Duration, Instant};
@@ -75,7 +75,6 @@ impl Drop for PinnedVersionGuard {
 #[derive(Clone)]
 pub struct PinnedVersion {
     version: Arc<HummockVersion>,
-    compaction_group_index: Arc<HashMap<TableId, CompactionGroupId>>,
     guard: Arc<PinnedVersionGuard>,
 }
 
@@ -85,11 +84,9 @@ impl PinnedVersion {
         pinned_version_manager_tx: UnboundedSender<PinVersionAction>,
     ) -> Self {
         let version_id = version.id;
-        let compaction_group_index = version.state_table_info.build_table_compaction_group_id();
 
         PinnedVersion {
             version: Arc::new(version),
-            compaction_group_index: Arc::new(compaction_group_index),
             guard: Arc::new(PinnedVersionGuard::new(
                 version_id,
                 pinned_version_manager_tx,
@@ -97,10 +94,6 @@ impl PinnedVersion {
         }
     }
 
-    pub(crate) fn compaction_group_index(&self) -> Arc<HashMap<TableId, CompactionGroupId>> {
-        self.compaction_group_index.clone()
-    }
-
     pub fn new_pin_version(&self, version: HummockVersion) -> Self {
         assert!(
             version.id >= self.version.id,
@@ -108,12 +101,10 @@ impl PinnedVersion {
             version.id,
             self.version.id
         );
-        let version_id = version.id;
-        let compaction_group_index = version.state_table_info.build_table_compaction_group_id();
+        let version_id: u64 = version.id;
 
         PinnedVersion {
             version: Arc::new(version),
-            compaction_group_index: Arc::new(compaction_group_index),
             guard: Arc::new(PinnedVersionGuard::new(
                 version_id,
                 self.guard.pinned_version_manager_tx.clone(),