AmatyaAvadhanula commented on code in PR #14292:
URL: https://github.com/apache/druid/pull/14292#discussion_r1201626142
##########
indexing-service/src/main/java/org/apache/druid/indexing/seekablestream/supervisor/SeekableStreamSupervisor.java:
##########
@@ -4220,6 +4220,18 @@ protected void emitLag()
return;
}
+ // Try emitting lag even with stale metrics provided that none of the
partitions has negative lag
+ final boolean areOffsetsStale =
+ sequenceLastUpdated != null
+ && sequenceLastUpdated.getMillis()
+ < System.currentTimeMillis() -
tuningConfig.getOffsetFetchPeriod().getMillis();
+ if (areOffsetsStale && partitionLags.values().stream().anyMatch(x -> x
< 0)) {
+ log.warn("Lag is negative and will not be emitted because topic
offsets have become stale. "
+ + "This will not impact data processing. "
+ + "Offsets may become stale because of connectivity
issues.");
+ return;
Review Comment:
Yes, we do emit metrics for every partition
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