diff --git a/include/polaris/plugin.h b/include/polaris/plugin.h
index 2bc0eb9..8b66ba7 100644
--- a/include/polaris/plugin.h
+++ b/include/polaris/plugin.h
@@ -351,8 +351,8 @@ class LoadBalancer : public Plugin {
 
 /// @brief
 struct InstanceGauge {
-  InstanceGauge() : call_ret_status(kCallRetOk), call_ret_code(0), call_daley(0),
-                    locality_aware_info(0) {}
+  InstanceGauge()
+      : call_ret_status(kCallRetOk), call_ret_code(0), call_daley(0), locality_aware_info(0) {}
   std::string service_name;
   std::string service_namespace;
   std::string instance_id;
diff --git a/polaris/engine/engine.cpp b/polaris/engine/engine.cpp
index 9119b16..f6fe0e9 100644
--- a/polaris/engine/engine.cpp
+++ b/polaris/engine/engine.cpp
@@ -24,7 +24,7 @@ class Context;
 Engine::Engine(Context* context)
     : context_(context), main_executor_(context), cache_manager_(context),
       monitor_reporter_(context_), circuit_breaker_executor_(context),
-      health_check_executor_(context) {}
+      health_checker_executor_(context) {}
 
 Engine::~Engine() {
   StopAndWait();
@@ -38,7 +38,7 @@ ReturnCode Engine::Start() {
       (ret_code = cache_manager_.Start()) != kReturnOk ||
       (ret_code = monitor_reporter_.Start()) != kReturnOk ||
       (ret_code = circuit_breaker_executor_.Start()) != kReturnOk ||
-      (ret_code = health_check_executor_.Start()) != kReturnOk) {
+      (ret_code = health_checker_executor_.Start()) != kReturnOk) {
     return ret_code;
   }
   return kReturnOk;
@@ -49,7 +49,7 @@ ReturnCode Engine::StopAndWait() {
   cache_manager_.StopAndWait();
   monitor_reporter_.StopAndWait();
   circuit_breaker_executor_.StopAndWait();
-  health_check_executor_.StopAndWait();
+  health_checker_executor_.StopAndWait();
   return kReturnOk;
 }
 
diff --git a/polaris/engine/engine.h b/polaris/engine/engine.h
index 5daa402..c88aa20 100644
--- a/polaris/engine/engine.h
+++ b/polaris/engine/engine.h
@@ -47,7 +47,7 @@ class Engine {
   CacheManager cache_manager_;
   MonitorReporter monitor_reporter_;
   CircuitBreakerExecutor circuit_breaker_executor_;
-  HealthCheckExecutor health_check_executor_;
+  HealthCheckExecutor health_checker_executor_;
 };
 
 }  // namespace polaris
diff --git a/polaris/engine/health_check_executor.cpp b/polaris/engine/health_check_executor.cpp
index 5eae333..3fb7380 100644
--- a/polaris/engine/health_check_executor.cpp
+++ b/polaris/engine/health_check_executor.cpp
@@ -33,8 +33,8 @@ void HealthCheckExecutor::TimingDetect(HealthCheckExecutor* executor) {
   std::vector<ServiceContext*> all_service_contexts;
   executor->context_->GetContextImpl()->GetAllServiceContext(all_service_contexts);
   for (std::size_t i = 0; i < all_service_contexts.size(); ++i) {
-    CircuitBreakerChain* circuit_breaker_chain = all_service_contexts[i]->GetCircuitBreakerChain();
     HealthCheckerChain* health_checker_chain   = all_service_contexts[i]->GetHealthCheckerChain();
+    CircuitBreakerChain* circuit_breaker_chain = all_service_contexts[i]->GetCircuitBreakerChain();
     health_checker_chain->DetectInstance(*circuit_breaker_chain);
     all_service_contexts[i]->DecrementRef();
   }
diff --git a/polaris/plugin/local_registry/local_registry.cpp b/polaris/plugin/local_registry/local_registry.cpp
index 50658fb..2adf6c2 100644
--- a/polaris/plugin/local_registry/local_registry.cpp
+++ b/polaris/plugin/local_registry/local_registry.cpp
@@ -427,7 +427,7 @@ ReturnCode InMemoryRegistry::GetCircuitBreakerInstances(const ServiceKey& servic
     const std::string& instance_id                  = *it;
     std::map<std::string, Instance*>::iterator iter = instance_map.find(instance_id);
     if (iter == instance_map.end()) {
-      POLARIS_LOG(LOG_INFO, "The outlier detector of service[%s/%s] getting instance[%s] failed",
+      POLARIS_LOG(LOG_INFO, "The health checker of service[%s/%s] getting instance[%s] failed",
                   service_key.namespace_.c_str(), service_key.name_.c_str(), instance_id.c_str());
       continue;
     }
diff --git a/test/logger_test.cpp b/test/logger_test.cpp
index fd051ed..1c23369 100644
--- a/test/logger_test.cpp
+++ b/test/logger_test.cpp
@@ -72,6 +72,7 @@ TEST_F(LoggerTest, TestFileShift) {
 
   const char *text = "test logger file shift";
   logger->Log(LOG_INFO, "%s\n", text);
+
   ASSERT_TRUE(FileUtils::FileExists(log_path_ + "/" + log_file_name_));
   ASSERT_TRUE(logger->log_file_ != NULL);
   ASSERT_TRUE(logger->cur_file_size_ > 0);