slfan1989 commented on code in PR #7343:
URL: https://github.com/apache/hadoop/pull/7343#discussion_r1939408107


##########
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/api/records/timelineservice/ApplicationEntity.java:
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@@ -43,7 +43,12 @@ public ApplicationEntity(TimelineEntity entity) {
   }
 
   public String getQueue() {
-    return getInfo().get(QUEUE_INFO_KEY).toString();
+    if (getInfo() != null) {

Review Comment:
   From my perspective, we need to continue iterating and improving the YARN 
Timeline-related code, implementing parsing for both JSON and XML formats in 
the way Jersey2 does. I hope that after completing the JDK17 support, we can 
continue advancing these improvements.



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