jtuglu-netflix commented on code in PR #18014:
URL: https://github.com/apache/druid/pull/18014#discussion_r2094950875
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server/src/main/java/org/apache/druid/segment/realtime/SegmentGenerationMetrics.java:
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@@ -297,7 +313,12 @@ public SegmentGenerationMetrics snapshot()
messageGapSnapshot = System.currentTimeMillis() - maxTimestamp;
}
retVal.messageGap.set(messageGapSnapshot);
- retVal.messageGapStats.set(messageGapStats.getAndSet(new
MessageGapStats()));
Review Comment:
> So, will we ever have the case (in the current semantics of
TaskRealtimeMetricsMonitor) where a reader thread and writer thread try to
access the same instance of MessageGapStats?
Yes,
[this](https://github.com/apache/druid/pull/17847#discussion_r2094612845)
example that I gave before.
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