diff --git a/README.md b/README.md
index 9c11af94da..5610c479e9 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,7 @@
 
 ![LICENSE](https://img.shields.io/badge/license-Apache--2.0-brightgreen)
 ![Language](https://img.shields.io/badge/language-C%2B%2B-blue)
+[![codebeat badge](https://codebeat.co/badges/e030a4f6-b126-4475-a938-4723d54ec3a7?style=plastic)](https://codebeat.co/projects/github-com-jinhai-cn-milvus-master)
 
 - [Slack Community](https://join.slack.com/t/milvusio/shared_invite/enQtNzY1OTQ0NDI3NjMzLWNmYmM1NmNjOTQ5MGI5NDhhYmRhMGU5M2NhNzhhMDMzY2MzNDdlYjM5ODQ5MmE3ODFlYzU3YjJkNmVlNDQ2ZTk)
 - [Twitter](https://twitter.com/milvusio)
diff --git a/core/src/scheduler/task/SearchTask.cpp b/core/src/scheduler/task/SearchTask.cpp
index 1f559ff5d0..1bf1caff76 100644
--- a/core/src/scheduler/task/SearchTask.cpp
+++ b/core/src/scheduler/task/SearchTask.cpp
@@ -307,8 +307,8 @@ XSearchTask::MergeTopkToResultSet(const std::vector<int64_t>& input_ids, const s
     }
 }
 
-//void
-//XSearchTask::MergeTopkArray(std::vector<int64_t>& tar_ids, std::vector<float>& tar_distance, uint64_t& tar_input_k,
+// void
+// XSearchTask::MergeTopkArray(std::vector<int64_t>& tar_ids, std::vector<float>& tar_distance, uint64_t& tar_input_k,
 //                            const std::vector<int64_t>& src_ids, const std::vector<float>& src_distance,
 //                            uint64_t src_input_k, uint64_t nq, uint64_t topk, bool ascending) {
 //    if (src_ids.empty() || src_distance.empty()) {
diff --git a/core/src/scheduler/task/SearchTask.h b/core/src/scheduler/task/SearchTask.h
index bbbf891383..bbc8b5bd8f 100644
--- a/core/src/scheduler/task/SearchTask.h
+++ b/core/src/scheduler/task/SearchTask.h
@@ -42,10 +42,10 @@ class XSearchTask : public Task {
     MergeTopkToResultSet(const std::vector<int64_t>& input_ids, const std::vector<float>& input_distance,
                          uint64_t input_k, uint64_t nq, uint64_t topk, bool ascending, scheduler::ResultSet& result);
 
-//    static void
-//    MergeTopkArray(std::vector<int64_t>& tar_ids, std::vector<float>& tar_distance, uint64_t& tar_input_k,
-//                   const std::vector<int64_t>& src_ids, const std::vector<float>& src_distance, uint64_t src_input_k,
-//                   uint64_t nq, uint64_t topk, bool ascending);
+    //    static void
+    //    MergeTopkArray(std::vector<int64_t>& tar_ids, std::vector<float>& tar_distance, uint64_t& tar_input_k,
+    //                   const std::vector<int64_t>& src_ids, const std::vector<float>& src_distance, uint64_t
+    //                   src_input_k, uint64_t nq, uint64_t topk, bool ascending);
 
  public:
     TableFileSchemaPtr file_;
diff --git a/core/unittest/db/test_search.cpp b/core/unittest/db/test_search.cpp
index db736923a6..b8cf08b3e2 100644
--- a/core/unittest/db/test_search.cpp
+++ b/core/unittest/db/test_search.cpp
@@ -46,7 +46,7 @@ BuildResult(std::vector<int64_t>& output_ids,
             output_distance[i * topk + j] = ascending ? (j + drand48()) : ((input_k - j) + drand48());
         }
         //insert invalid items
-        for(uint64_t j = input_k; j < topk; j++) {
+        for (uint64_t j = input_k; j < topk; j++) {
             output_ids[i * topk + j] = -1;
             output_distance[i * topk + j] = -1.0;
         }
@@ -113,7 +113,7 @@ CheckTopkResult(const std::vector<int64_t>& input_ids_1,
 
         uint64_t n = std::min(topk, result[i].size());
         for (uint64_t j = 0; j < n; j++) {
-            if(result[i][j].first < 0) {
+            if (result[i][j].first < 0) {
                 continue;
             }
             if (src_vec[j] != result[i][j].second) {
@@ -126,7 +126,8 @@ CheckTopkResult(const std::vector<int64_t>& input_ids_1,
 
 } // namespace
 
-void MergeTopkToResultSetTest(uint64_t topk_1, uint64_t topk_2, uint64_t nq, uint64_t topk, bool ascending) {
+void
+MergeTopkToResultSetTest(uint64_t topk_1, uint64_t topk_2, uint64_t nq, uint64_t topk, bool ascending) {
     std::vector<int64_t> ids1, ids2;
     std::vector<float> dist1, dist2;
     ms::ResultSet result;
@@ -150,12 +151,12 @@ TEST(DBSearchTest, MERGE_RESULT_SET_TEST) {
     MergeTopkToResultSetTest(TOP_K, TOP_K, NQ, TOP_K, false);
 
     /* test3, id1/dist1 small topk */
-    MergeTopkToResultSetTest(TOP_K/2, TOP_K, NQ, TOP_K, true);
-    MergeTopkToResultSetTest(TOP_K/2, TOP_K, NQ, TOP_K, false);
+    MergeTopkToResultSetTest(TOP_K / 2, TOP_K, NQ, TOP_K, true);
+    MergeTopkToResultSetTest(TOP_K / 2, TOP_K, NQ, TOP_K, false);
 
     /* test4, id1/dist1 small topk, id2/dist2 small topk */
-    MergeTopkToResultSetTest(TOP_K/2, TOP_K/3, NQ, TOP_K, true);
-    MergeTopkToResultSetTest(TOP_K/2, TOP_K/3, NQ, TOP_K, false);
+    MergeTopkToResultSetTest(TOP_K / 2, TOP_K / 3, NQ, TOP_K, true);
+    MergeTopkToResultSetTest(TOP_K / 2, TOP_K / 3, NQ, TOP_K, false);
 }
 
 //void MergeTopkArrayTest(uint64_t topk_1, uint64_t topk_2, uint64_t nq, uint64_t topk, bool ascending) {
@@ -224,8 +225,8 @@ TEST(DBSearchTest, REDUCE_PERF_TEST) {
     std::vector<int32_t> thread_vec = {4, 8};
     std::vector<int32_t> nq_vec = {1, 10, 100};
     std::vector<int32_t> topk_vec = {1, 4, 16, 64};
-    int32_t NQ = nq_vec[nq_vec.size()-1];
-    int32_t TOPK = topk_vec[topk_vec.size()-1];
+    int32_t NQ = nq_vec[nq_vec.size() - 1];
+    int32_t TOPK = topk_vec[topk_vec.size() - 1];
 
     std::vector<std::vector<int64_t>> id_vec;
     std::vector<std::vector<float>> dist_vec;
@@ -255,7 +256,7 @@ TEST(DBSearchTest, REDUCE_PERF_TEST) {
                 }
 
                 std::string str1 = "Method-1 " + std::to_string(max_thread_num) + " " +
-                                    std::to_string(nq) + " " + std::to_string(top_k);
+                                   std::to_string(nq) + " " + std::to_string(top_k);
                 milvus::TimeRecorder rc1(str1);
 
                 ///////////////////////////////////////////////////////////////////////////////////////