hanahmily commented on a change in pull request #6243:
URL: https://github.com/apache/skywalking/pull/6243#discussion_r562310992



##########
File path: 
oap-server/server-receiver-plugin/otel-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/otel/oc/OCMetricHandler.java
##########
@@ -107,6 +118,13 @@
         return result;
     }
 
+    private static Map<String, String> buildLabelsFromNodeInfo(Node node,
+                                                               Map<String, 
String> buildLabelsResult) {
+        if (node != null)
+            buildLabelsResult.put("node_identifier_host_name", 
node.getIdentifier().getHostName());

Review comment:
       MAL has a capacity to transform `.` to `_`, which means no matter what 
we choose, the final result must be `node_identifier_host_name `.




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