The lines you are looking for look like this :
INFO [CompactionExecutor:48] 2016-01-12 09:07:59,995 CompactionTask.java
(line 120) Compacting
[SSTableReader(path='/usr/local/cassandra/data/system/sstable_activity/system-sstable_activity-jb-4959-Data.db'),
SSTableReader(path='/usr/local/cassandra/data/system/sstable_activity/system-sstable_activity-jb-4960-Data.db'),
SSTableReader(path='/usr/local/cassandra/data/system/sstable_activity/system-sstable_activity-jb-4961-Data.db'),
SSTableReader(path='/usr/local/cassandra/data/system/sstable_activity/system-sstable_activity-jb-4962-Data.db')]
and
INFO [CompactionExecutor:47] 2016-01-12 04:06:43,946 CompactionTask.java
(line 299) Compacted 4 sstables to
[/usr/local/cassandra/data/system/compaction_history/system-compaction_history-jb-3532,].
14,413 bytes to 13,334 (~92% of original) in 52,135ms = 0.000244MB/s. 156
total partitions merged to 149. Partition merge counts were {1:156, }
There are only 4 of the compaction completed messages in the log you
attached, tiny ones.
The log doesn't look like much compaction is occurring?
=Rob
