Hello,

I'm seeing compaction statistics which look like the following

 INFO 17:03:09,216 Compacted 4 sstables to [/var/lib/cassandra/data/studata/datapoints/studata-datapoints-ib-629,].  420,807,293 bytes to 415,287,150 (~98% of original) in 341,690ms = 1.159088MB/s.  233,761 total rows, 75,637 unique.  Row merge counts were {1:0, 2:15, 3:68757, 4:6865, }

Does anybody know what "Row merge counts were {1:0, 2:15, 3:68757, 4:6865, }" means?

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Thanks

 A Jabbar Azam