gong commented on code in PR #6750:
URL: https://github.com/apache/inlong/pull/6750#discussion_r1048324003


##########
inlong-sort/sort-connectors/base/src/main/java/org/apache/inlong/sort/base/util/MetricStateUtils.java:
##########
@@ -230,6 +231,39 @@ public static void 
snapshotMetricStateForSinkMetricData(ListState<MetricState> m
         }
         MetricState metricState = new MetricState(subtaskIndex, metricDataMap);
         metricStateListState.add(metricState);
+
+        // snapshot sub metric data state
+        snapshotMetricStateForSinkTopicMetricData(sinkMetricData, 
subtaskIndex, metricState);
+        metricStateListState.add(metricState);
+    }
+
+    /**
+     * Snapshot sub metric state data for {@link SinkSubMetricData}
+     * @param sinkMetricData {@link SinkMetricData} A collection class for 
handling metrics
+     * @param subtaskIndex subtask index
+     * @param metricState state of source metric data
+     */
+    private static void 
snapshotMetricStateForSinkTopicMetricData(SinkMetricData sinkMetricData,
+            Integer subtaskIndex, MetricState metricState) {
+        if (!(sinkMetricData instanceof SinkSubMetricData)) {
+            return;
+        }
+        SinkSubMetricData sinkSubMetricData = (SinkSubMetricData) 
sinkMetricData;
+
+        Map<String, SinkMetricData> subSourceMetricMap = 
sinkSubMetricData.getSubSourceMetricMap();
+        if(subSourceMetricMap != null && !subSourceMetricMap.isEmpty()) {

Review Comment:
   `subSourceMetricMap`? sink



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