nodetool setcompactionthreshold 

Sets minimum and maximum compaction thresholds for a table.

Sets minimum and maximum compaction thresholds for a table.

Synopsis 

$ nodetool <options> setcompactionthreshold -- <keyspace> <table> <minthreshold> <maxthreshold>
DataStax Enterprise 5.0 Installer No-Services and tarball installations:
installation_location/resources/cassandra/bin
Options
Short Long Description
-h --host Hostname or IP address.
-p --port Port number.
-pwf --password-file Password file path.
-pw --password Password.
-u --username Remote JMX agent username.
keyspace Name of a keyspace.
table Name of a table.
minthreshold Sets the minimum number of SSTables to trigger a minor compaction when using SizeTieredCompactionStrategy or DateTieredCompactionStrategy.
maxthreshold Sets the maximum number of SSTables to allow in a minor compaction when using SizeTieredCompactionStrategy or DateTieredCompactionStrategy.
-- Separates an option from an argument that could be mistaken for a option.

Description 

This parameter controls how many SSTables of a similar size must be present before a minor compaction is scheduled. The max_threshold table property sets an upper bound on the number of SSTables that may be compacted in a single minor compaction.

When using LeveledCompactionStrategy, maxthreshold sets the MAX_COMPACTING_L0, which limits the number of L0 SSTables that are compacted concurrently to avoid wasting memory or running out of memory when compacting highly overlapping SSTables.