protected static void createDirectory(MasterProcedureEnv env, NamespaceDescriptor nsDescriptor)
    throws IOException {
    createDirectory(env.getMasterServices().getMasterFileSystem(), nsDescriptor);
  }
Create the namespace directory
@param env          MasterProcedureEnv
@param nsDescriptor NamespaceDescriptor
hbase-server/src/main/java/org/apache/hadoop/hbase/master/procedure/AbstractStateMachineNamespaceProcedure.java