nodetool cleanup/scrub/upgradesstables promotes all sstables to next level 
(LeveledCompaction)
----------------------------------------------------------------------------------------------

                 Key: CASSANDRA-3989
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3989
             Project: Cassandra
          Issue Type: Bug
          Components: Core
    Affects Versions: 1.0.7
         Environment: RHEL6
            Reporter: Maki Watanabe
            Priority: Minor


1.0.7 + LeveledCompactionStrategy
If you run nodetool cleanup, scrub, or upgradesstables, Cassandra execute 
compaction for each sstable. During the compaction, it put the new sstable to 
next level of the original sstable. If you run cleanup many times, sstables 
will reached to the highest level, and CASSANDRA-3608 will happens at next 
cleanup.

Reproduce procedure:
# create column family CF1 with compaction_strategy=LeveledCompactionStrategy 
and compaction_strategy_options={sstable_size_in_mb: 5};
# Insert some data into CF1.
# nodetool flush
# Verify the sstable is created at L1 in CF1.json
# nodetool cleanup
# Verify sstable in L1 is removed and new sstable is created at L2 in CF1.json
# repeat nodetool cleanup some times

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