AmatyaAvadhanula commented on code in PR #15676:
URL: https://github.com/apache/druid/pull/15676#discussion_r1451891825
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server/src/main/java/org/apache/druid/server/coordinator/compact/NewestSegmentFirstIterator.java:
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@@ -339,6 +339,12 @@ private SegmentsToCompact findSegmentsToCompact(
while (compactibleSegmentIterator.hasNext()) {
List<DataSegment> segments = compactibleSegmentIterator.next();
+ // Do not compact an interval which comprises of a single tombstone
+ // If there are multiple tombstones in the interval, we may still want
to compact them
+ if (segments.size() == 1 && segments.get(0).isTombstone()) {
+ continue;
Review Comment:
https://github.com/apache/druid/blob/e49a7bb3cd97764942dd2b465b0f94dc40653cef/server/src/main/java/org/apache/druid/server/coordinator/compact/NewestSegmentFirstIterator.java#L133
The tombstones are also considered to be numbered partition chunks in
`isCompactibleHolder` because of the above code, and fixing it there seems a
bit more involved.
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