Sounds like this:
"SSTables that are obsoleted by a compaction are deleted
asynchronously when the JVM performs a GC. You can force a GC from
jconsole if necessary, but Cassandra will force one itself if it
detects that it is low on space. A compaction marker is also added to
obsolete sstables so
After performing "nodetool compact" command the disk usage was doubled.
nodetool info reports that the load is 74G (same as before compaction) while
the size of the data folder on disk is 133GB (was about 74G before compaction).
