diff --git a/src/cmd/sql_cmd_test.cc b/src/cmd/sql_cmd_test.cc
index 36009127231..94c8a1597f3 100644
--- a/src/cmd/sql_cmd_test.cc
+++ b/src/cmd/sql_cmd_test.cc
@@ -363,7 +363,7 @@ TEST_F(SqlCmdTest, SelectMultiPartition) {
 }
 
 TEST_F(SqlCmdTest, ShowNameserverJob) {
-    auto sr = cluster_cli.sr;
+    sr = cluster_cli.sr;
     std::string db_name = "test" + GenRand();
     std::string name = "table" + GenRand();
     std::string ddl = "create table " + name +
@@ -3826,6 +3826,7 @@ int main(int argc, char** argv) {
     ::openmldb::sdk::ClusterOptions copt;
     copt.zk_cluster = mc.GetZkCluster();
     copt.zk_path = mc.GetZkPath();
+    copt.zk_session_timeout = FLAGS_zk_session_timeout;
     ::openmldb::cmd::cluster_cli.cs = new ::openmldb::sdk::ClusterSDK(copt);
     ::openmldb::cmd::cluster_cli.cs->Init();
     ::openmldb::cmd::cluster_cli.sr = new ::openmldb::sdk::SQLClusterRouter(::openmldb::cmd::cluster_cli.cs);
diff --git a/src/nameserver/name_server_impl.cc b/src/nameserver/name_server_impl.cc
index 0bce354852f..f193854701b 100644
--- a/src/nameserver/name_server_impl.cc
+++ b/src/nameserver/name_server_impl.cc
@@ -17,16 +17,15 @@
 #include "nameserver/name_server_impl.h"
 
 #include <algorithm>
-#include <set>
-#include <random>
-#include <iterator>
 #include <iostream>
+#include <iterator>
+#include <random>
+#include <set>
 #include <vector>
 
-
+#include "absl/strings/numbers.h"
 #include "absl/strings/str_cat.h"
 #include "absl/strings/str_split.h"
-#include "absl/strings/numbers.h"
 #include "absl/time/time.h"
 #include "nameserver/system_table.h"
 #include "sdk/db_sdk.h"
@@ -44,10 +43,10 @@
 #include "base/strings.h"
 #include "boost/algorithm/string.hpp"
 #include "boost/bind.hpp"
+#include "codec/row_codec.h"
 #include "gflags/gflags.h"
 #include "schema/index_util.h"
 #include "schema/schema_adapter.h"
-#include "codec/row_codec.h"
 
 DECLARE_string(endpoint);
 DECLARE_string(zk_cluster);
@@ -75,7 +74,6 @@ DECLARE_bool(use_name);
 DECLARE_bool(enable_distsql);
 DECLARE_uint32(sync_deploy_stats_timeout);
 
-
 namespace openmldb {
 namespace nameserver {
 
@@ -8584,6 +8582,24 @@ bool NameServerImpl::AddIndexToTableInfo(const std::string& name, const std::str
         }
     }
     UpdateZkTableNode(table_info);
+    // refresh tablet here, cuz this func may be called by task
+    // if refresh failed, won't break the process of add index
+    std::set<std::string> endpoint_set;
+    for (const auto& part : table_info->table_partition()) {
+        for (const auto& meta : part.partition_meta()) {
+            endpoint_set.insert(meta.endpoint());
+        }
+    }
+    // locked on top
+    for (const auto& tablet : tablets_) {
+        if (!tablet.second->Health()) {
+            continue;
+        }
+        if (endpoint_set.count(tablet.first) == 0) {
+            tablet.second->client_->Refresh(table_info->tid());
+        }
+    }
+
     PDLOG(INFO, "add index ok. table %s index cnt %d", name.c_str(), column_key.size());
     if (task_info) {
         task_info->set_status(::openmldb::api::TaskStatus::kDone);
@@ -9561,9 +9577,8 @@ void NameServerImpl::ShowProcedure(RpcController* controller, const api::ShowPro
     }
 }
 
-std::shared_ptr<TabletInfo> NameServerImpl::GetTablet(const std::string& endpoint) {
+std::shared_ptr<TabletInfo> NameServerImpl::GetTabletUnlock(const std::string& endpoint) {
     std::shared_ptr<TabletInfo> tablet_ptr;
-    std::lock_guard<std::mutex> lock(mu_);
     auto iter = tablets_.find(endpoint);
     // check tablet if exist
     if (iter == tablets_.end()) {
@@ -9577,6 +9592,11 @@ std::shared_ptr<TabletInfo> NameServerImpl::GetTablet(const std::string& endpoin
     return tablet_ptr;
 }
 
+std::shared_ptr<TabletInfo> NameServerImpl::GetTablet(const std::string& endpoint) {
+    std::lock_guard<std::mutex> lock(mu_);
+    return GetTabletUnlock(endpoint);
+}
+
 void NameServerImpl::CreateDatabaseOrExit(const std::string& db) {
     auto status = CreateDatabase(db, true);
     if (!status.OK() && status.code != ::openmldb::base::ReturnCode::kDatabaseAlreadyExists) {
diff --git a/src/nameserver/name_server_impl.h b/src/nameserver/name_server_impl.h
index e5f41923647..d8fc2245401 100644
--- a/src/nameserver/name_server_impl.h
+++ b/src/nameserver/name_server_impl.h
@@ -654,6 +654,7 @@ class NameServerImpl : public NameServer {
 
     void DropProcedureOnTablet(const std::string& db_name, const std::string& sp_name);
 
+    std::shared_ptr<TabletInfo> GetTabletUnlock(const std::string& endpoint);
     std::shared_ptr<TabletInfo> GetTablet(const std::string& endpoint);
 
     std::vector<std::shared_ptr<TabletInfo>> GetAllHealthTablet();
diff --git a/src/test/util.cc b/src/test/util.cc
index 5f78ed519a7..59a772eed78 100644
--- a/src/test/util.cc
+++ b/src/test/util.cc
@@ -190,7 +190,7 @@ void ProcessSQLs(sdk::SQLRouter* sr, std::initializer_list<absl::string_view> sq
 
 void ExpectResultSetStrEq(const std::vector<std::vector<CellExpectInfo>>& expect, hybridse::sdk::ResultSet* rs,
                           bool ordered) {
-    ASSERT_EQ(expect.size(), rs->Size() + 1);
+    ASSERT_EQ(expect.size(), static_cast<uint64_t>(rs->Size()) + 1);
     size_t idx = 0;
     // schema check
     ASSERT_EQ(expect.front().size(), rs->GetSchema()->GetColumnCnt());