klsince commented on code in PR #13992:
URL: https://github.com/apache/pinot/pull/13992#discussion_r1761853000


##########
pinot-segment-local/src/main/java/org/apache/pinot/segment/local/upsert/BasePartitionUpsertMetadataManager.java:
##########
@@ -1200,12 +1219,45 @@ public void trackSegmentForUpsertView(IndexSegment 
segment) {
     if (_upsertViewManager != null) {
       _upsertViewManager.trackSegment(segment);
     }
+    if (segment instanceof MutableSegment) {
+      trackNewlyAddedSegment(segment);
+    }
   }
 
   @Override
   public void untrackSegmentForUpsertView(IndexSegment segment) {
     if (_upsertViewManager != null) {
       _upsertViewManager.untrackSegment(segment);
     }
+    if (segment instanceof MutableSegment) {
+      untrackNewlyAddedSegment(segment);
+    }
+  }
+
+  @VisibleForTesting
+  void trackNewlyAddedSegment(IndexSegment segment) {
+    if (_newSegmentTrackingTimeMs > 0) {
+      _newlyAddedSegments.put(segment.getSegmentName(), -1L);
+    }
+  }
+
+  @VisibleForTesting
+  void untrackNewlyAddedSegment(IndexSegment segment) {

Review Comment:
   I left comment for `_newlyAddedSegments` variable, that the delay timer 
starts after the segment is fully processed, as the time to add a segment can 
vary a lot.
   
   and similar comment added for the new config 
   ```
   @JsonPropertyDescription("How long to track a newly added segment, after it 
is processed by the server.")
     private long _newSegmentTrackingTimeMs = 30000;
   ```
   
   lemme know if these make sense.



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