phrocker commented on a change in pull request #7:
URL: https://github.com/apache/hbase-native-client/pull/7#discussion_r440115909



##########
File path: src/hbase/test-util/mini-cluster.cc
##########
@@ -306,3 +289,14 @@ jclass hbase::MiniCluster::FindClassAndGetGlobalRef(const 
char *cls_name) {
   env_->DeleteLocalRef(local_ref);
   return static_cast<jclass>(global_ref);
 }
+
+void hbase::MiniCluster::StopCluster() {
+  CHECK_NOTNULL(env_);
+  lock_guard<mutex> lock(lock_);

Review comment:
       Unless I'm missing something ( usually am ), If we move assignment of 
testing_util_class to the constructor we shouldn't need a mutex and we 
shouldn't need to check if htu exists. This would allow StopCluster to be used 
in the destructor safely. 




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