diff --git a/src/cmd/src/frontend.rs b/src/cmd/src/frontend.rs
index 2f10b722c732..38fa75a3a0ec 100644
--- a/src/cmd/src/frontend.rs
+++ b/src/cmd/src/frontend.rs
@@ -342,6 +342,8 @@ impl StartCommand {
         // Some queries are expected to take long time.
         let channel_config = ChannelConfig {
             timeout: None,
+            tcp_nodelay: opts.datanode.client.tcp_nodelay,
+            connect_timeout: Some(opts.datanode.client.connect_timeout),
             ..Default::default()
         };
         let client = NodeClients::new(channel_config);
diff --git a/src/meta-srv/src/metasrv.rs b/src/meta-srv/src/metasrv.rs
index 5c53a1abbb80..ee02518fa35a 100644
--- a/src/meta-srv/src/metasrv.rs
+++ b/src/meta-srv/src/metasrv.rs
@@ -184,22 +184,26 @@ pub struct MetasrvInfo {
 // Options for datanode.
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, Default)]
 pub struct DatanodeOptions {
-    pub client_options: DatanodeClientOptions,
+    pub client: DatanodeClientOptions,
 }
 
 // Options for datanode client.
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct DatanodeClientOptions {
-    pub timeout_millis: u64,
-    pub connect_timeout_millis: u64,
+    #[serde(with = "humantime_serde")]
+    pub timeout: Duration,
+    #[serde(with = "humantime_serde")]
+    pub connect_timeout: Duration,
     pub tcp_nodelay: bool,
 }
 
 impl Default for DatanodeClientOptions {
     fn default() -> Self {
         Self {
-            timeout_millis: channel_manager::DEFAULT_GRPC_REQUEST_TIMEOUT_SECS * 1000,
-            connect_timeout_millis: channel_manager::DEFAULT_GRPC_CONNECT_TIMEOUT_SECS * 1000,
+            timeout: Duration::from_secs(channel_manager::DEFAULT_GRPC_REQUEST_TIMEOUT_SECS),
+            connect_timeout: Duration::from_secs(
+                channel_manager::DEFAULT_GRPC_CONNECT_TIMEOUT_SECS,
+            ),
             tcp_nodelay: true,
         }
     }
diff --git a/src/meta-srv/src/metasrv/builder.rs b/src/meta-srv/src/metasrv/builder.rs
index 31c17bb8f2e6..781839a193a8 100644
--- a/src/meta-srv/src/metasrv/builder.rs
+++ b/src/meta-srv/src/metasrv/builder.rs
@@ -14,7 +14,6 @@
 
 use std::sync::atomic::AtomicBool;
 use std::sync::{Arc, Mutex, RwLock};
-use std::time::Duration;
 
 use client::client_manager::NodeClients;
 use common_base::Plugins;
@@ -250,13 +249,9 @@ impl MetasrvBuilder {
         let memory_region_keeper = Arc::new(MemoryRegionKeeper::default());
         let node_manager = node_manager.unwrap_or_else(|| {
             let datanode_client_channel_config = ChannelConfig::new()
-                .timeout(Duration::from_millis(
-                    options.datanode.client_options.timeout_millis,
-                ))
-                .connect_timeout(Duration::from_millis(
-                    options.datanode.client_options.connect_timeout_millis,
-                ))
-                .tcp_nodelay(options.datanode.client_options.tcp_nodelay);
+                .timeout(options.datanode.client.timeout)
+                .connect_timeout(options.datanode.client.connect_timeout)
+                .tcp_nodelay(options.datanode.client.tcp_nodelay);
             Arc::new(NodeClients::new(datanode_client_channel_config))
         });
         let cache_invalidator = Arc::new(MetasrvCacheInvalidator::new(