[GitHub] [flink] xintongsong commented on a diff in pull request #20111: [FLINK-28309][rest] Introduce metrics of the duration that a task sta…

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

xintongsong commented on code in PR #20111:
URL: https://github.com/apache/flink/pull/20111#discussion_r910765394


##########
flink-runtime/src/main/java/org/apache/flink/runtime/rest/messages/job/SubtaskExecutionAttemptDetailsInfo.java:
##########
@@ -237,6 +256,57 @@ public static SubtaskExecutionAttemptDetailsInfo create(
                 endTime,
                 duration,
                 ioMetricsInfo,
-                taskmanagerId);
+                taskmanagerId,
+                getExecutionStateDuration(execution));
+    }
+
+    private static Map<ExecutionState, Long> getExecutionStateDuration(AccessExecution execution) {
+        Map<ExecutionState, Long> executionStateDuration = new HashMap<>();
+        long now = System.currentTimeMillis();
+        ExecutionState state = execution.getState();
+        executionStateDuration.put(
+                ExecutionState.CREATED,
+                calculateStateDuration(
+                        execution.getStateTimestamp(ExecutionState.CREATED),
+                        execution.getStateEndTimestamp(ExecutionState.CREATED),
+                        state == ExecutionState.CREATED ? now : 0));

Review Comment:
   ```suggestion
           executionStateDuration.put(
                   ExecutionState.CREATED,
                   calculateStateDuration(
                           execution.getStateTimestamp(ExecutionState.CREATED),
                           state == ExecutionState.CREATED ? now : execution.getStateEndTimestamp(ExecutionState.CREATED)));
   ```
   
   I think this helps prevent the implicity that indicating the current state with `now != 0`.



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