diff --git a/src/common/meta/src/key.rs b/src/common/meta/src/key.rs
index 027c6a5896..dd5f9c88c6 100644
--- a/src/common/meta/src/key.rs
+++ b/src/common/meta/src/key.rs
@@ -53,8 +53,6 @@ pub mod schema_name;
 pub mod table_info;
 pub mod table_name;
 pub mod table_region;
-// TODO(weny): removes it.
-#[allow(unused)]
 pub mod table_route;
 
 use std::sync::Arc;
diff --git a/src/common/meta/src/key/datanode_table.rs b/src/common/meta/src/key/datanode_table.rs
index ea77b102f2..31a577d5ce 100644
--- a/src/common/meta/src/key/datanode_table.rs
+++ b/src/common/meta/src/key/datanode_table.rs
@@ -43,7 +43,6 @@ impl DatanodeTableKey {
         format!("{}/{datanode_id}", DATANODE_TABLE_KEY_PREFIX)
     }
 
-    #[allow(unused)]
     pub fn strip_table_id(raw_key: &[u8]) -> Result<TableId> {
         let key = String::from_utf8(raw_key.to_vec()).map_err(|e| {
             InvalidTableMetadataSnafu {
diff --git a/src/common/meta/src/key/table_route.rs b/src/common/meta/src/key/table_route.rs
index 8f1f656b1a..dffda1ce23 100644
--- a/src/common/meta/src/key/table_route.rs
+++ b/src/common/meta/src/key/table_route.rs
@@ -15,19 +15,16 @@
 use std::fmt::Display;
 
 use api::v1::meta::TableName;
-use futures::future::try_join_all;
-use serde::__private::de;
 use serde::{Deserialize, Serialize};
 use snafu::ensure;
 use table::metadata::TableId;
 
 use crate::error::{Result, UnexpectedSnafu};
 use crate::key::{to_removed_key, TableMetaKey};
-use crate::kv_backend::txn::{Compare, CompareOp, Txn, TxnOp, TxnOpResponse, TxnRequest};
+use crate::kv_backend::txn::{Compare, CompareOp, Txn, TxnOp, TxnOpResponse};
 use crate::kv_backend::KvBackendRef;
-use crate::rpc::router::{region_distribution, RegionRoute, Table, TableRoute};
-use crate::rpc::store::{BatchGetRequest, CompareAndPutRequest, MoveValueRequest};
-use crate::rpc::KeyValue;
+use crate::rpc::router::RegionRoute;
+use crate::rpc::store::{CompareAndPutRequest, MoveValueRequest};
 
 pub const TABLE_ROUTE_PREFIX: &str = "__meta_table_route";
 
@@ -319,19 +316,13 @@ mod tests {
     use super::TableRouteKey;
     use crate::key::table_route::{TableRouteManager, TableRouteValue};
     use crate::kv_backend::memory::MemoryKvBackend;
-    use crate::rpc::router::{RegionRoute, Table, TableRoute};
-    use crate::table_name::TableName;
+    use crate::rpc::router::RegionRoute;
 
     #[tokio::test]
     async fn test_table_route_manager() {
         let mgr = TableRouteManager::new(Arc::new(MemoryKvBackend::default()));
 
         let table_id = 1024u32;
-        let table = Table {
-            id: table_id as u64,
-            table_name: TableName::new("foo", "bar", "baz"),
-            table_schema: b"mock schema".to_vec(),
-        };
         let region_route = RegionRoute::default();
         let region_routes = vec![region_route];
 
@@ -349,11 +340,13 @@ mod tests {
         let mut updated = expect.clone();
         updated.region_routes.push(RegionRoute::default());
 
-        mgr.compare_and_put(1024, Some(expect.clone()), updated.region_routes.clone())
+        let _ = mgr
+            .compare_and_put(1024, Some(expect.clone()), updated.region_routes.clone())
             .await
             .unwrap();
 
-        mgr.compare_and_put(1024, Some(expect.clone()), updated.region_routes)
+        let _ = mgr
+            .compare_and_put(1024, Some(expect.clone()), updated.region_routes)
             .await
             .unwrap();
     }
diff --git a/src/meta-srv/src/ddl.rs b/src/meta-srv/src/ddl.rs
index 3c4b0a5828..cb154d9fad 100644
--- a/src/meta-srv/src/ddl.rs
+++ b/src/meta-srv/src/ddl.rs
@@ -51,7 +51,6 @@ pub(crate) struct DdlContext {
     pub(crate) datanode_clients: Arc<DatanodeClients>,
     pub(crate) mailbox: MailboxRef,
     pub(crate) server_addr: String,
-    #[allow(unused)]
     pub(crate) table_metadata_manager: TableMetadataManagerRef,
 }
 
diff --git a/src/meta-srv/src/procedure/region_failover.rs b/src/meta-srv/src/procedure/region_failover.rs
index 06b0049460..efe1acb3bc 100644
--- a/src/meta-srv/src/procedure/region_failover.rs
+++ b/src/meta-srv/src/procedure/region_failover.rs
@@ -453,12 +453,6 @@ mod tests {
             Self { selector: None }
         }
 
-        #[allow(unused)]
-        pub fn with_selector(mut self, selector: SelectorRef) -> Self {
-            self.selector = Some(selector);
-            self
-        }
-
         pub async fn build(self) -> TestingEnv {
             let in_memory = Arc::new(MemStore::new());
             let kv_store: KvStoreRef = Arc::new(MemStore::new());