kfaraz commented on code in PR #19648:
URL: https://github.com/apache/druid/pull/19648#discussion_r3510666997


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server/src/main/java/org/apache/druid/client/CachingClusteredClient.java:
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@@ -345,6 +345,19 @@ ClusterQueryResult<T> run(
       }
 
       final Set<SegmentServerSelector> segmentServers = 
computeSegmentsToQuery(timeline, specificSegments);
+      log.info("Query[%s] found [%d] segments from timeline lookup.", 
query.getId(), segmentServers.size());

Review Comment:
   > we're only logging the total size of segments
   
   Even logging the total segment count per query will become very noisy at 
high QPS. It is also a little confusing since we don't log any other thing from 
the lifecycle of a query when `debug` is off.



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