soumitra-st commented on PR #12957:
URL: https://github.com/apache/pinot/pull/12957#issuecomment-2062557491

   > I don't think this is the correct fix. We rely on the callback to track 
the ingestion delay. I feel the real issue is this metric is not removed after 
the consumer is destroyed.
   
   There are two issues:
   1. Why metric is not removed when consumer is destroyed?
   2. Why metric keep increasing when no consumer exists?
        This PR address #2. In fact, the happy path publishes the metric after 
every batch at 
https://github.com/apache/pinot/blob/7f87cd3a9ffd7f73c14502d9457a037926aab75f/pinot-core/src/main/java/org/apache/pinot/core/data/manager/realtime/RealtimeSegmentDataManager.java#L647
 .
   
   IMO, we need to fix both the issues.


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