it would be really helpfull if leveled compaction prints level into syslog.
Demo:
INFO [CompactionExecutor:891] 2012-04-05 22:39:27,043
CompactionTask.java (line 113) Compacting ***LEVEL 1***
[SSTableReader(path='/var/lib/cassandra/data/rapidshare/querycache-hc-19690-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/rapidshare/querycache-hc-19688-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/rapidshare/querycache-hc-19691-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/rapidshare/querycache-hc-19700-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/rapidshare/querycache-hc-19686-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/rapidshare/querycache-hc-19696-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/rapidshare/querycache-hc-19687-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/rapidshare/querycache-hc-19695-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/rapidshare/querycache-hc-19689-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/rapidshare/querycache-hc-19694-Data.db'),
SSTableReader(path='/var/lib/cassandra/data/rapidshare/querycache-hc-19693-Data.db')]
INFO [CompactionExecutor:891] 2012-04-05 22:39:57,299
CompactionTask.java (line 221) *** LEVEL 1 *** Compacted to
[/var/lib/cassandra/data/rapidshare/querycache-hc-19701-Data.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19702-Data.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19703-Data.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19704-Data.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19705-Data.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19706-Data.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19707-Data.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19708-Data.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19709-Data.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19710-Data.db,/var/lib/cassandra/data/rapidshare/querycache-hc-19711-Data.db,].
59,643,011 to 57,564,216 (~96% of original) bytes for 590,909 keys at
1.814434MB/s. Time: 30,256ms.
