[GitHub] [incubator-pinot] jackjlli commented on a change in pull request #7033: Include null check for setting minion tag.

[GitBox <gi...@apache.org>]

jackjlli commented on a change in pull request #7033:
URL: https://github.com/apache/incubator-pinot/pull/7033#discussion_r647868700



##########
File path: pinot-minion/src/main/java/org/apache/pinot/minion/MinionStarter.java
##########
@@ -284,7 +284,8 @@ private void addInstanceTagIfNeeded() {
     HelixAdmin helixAdmin = _helixManager.getClusterManagmentTool();
     String clusterName = _helixManager.getClusterName();
     InstanceConfig instanceConfig = helixAdmin.getInstanceConfig(clusterName, _instanceId);
-    if (instanceConfig.getTags().isEmpty()) {
+    List<String> instanceTags = instanceConfig.getTags();

Review comment:
       The returned instanceConfig could be null if record is null. @amrishlal Please add the check `instanceConfig == null ` as well.
   
   ```
     public static <T extends HelixProperty> T convertToTypedInstance(Class<T> clazz, ZNRecord record) {
       if (record == null) {
         return null;
       }
   
       try {
         Constructor<T> constructor = clazz.getConstructor(ZNRecord.class);
         return constructor.newInstance(record);
       } catch (Exception e) {
         LOG.error("Exception convert znrecord: " + record + " to class: " + clazz, e);
       }
   
       return null;
     }
   ```




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