log on empty head compaction result
@@ -488,6 +488,12 @@ func (c *LeveledCompactor) Write(dest string, b BlockReader, mint, maxt int64, p
}
if meta.Stats.NumSamples == 0 {
+ level.Info(c.logger).Log(
+ "msg", "write block resulted in empty block",
+ "mint", meta.MinTime,
+ "maxt", meta.MaxTime,
+ "duration", time.Since(start),
+ )
return ulid.ULID{}, nil
}
