You can't delete by year unless tables are organized by year. For deleting tables, cassandra keeeps a copy of the file history which you can delete. Also, you could delete all the extra rows using CQL.
On Wed, Jun 10, 2015 at 7:15 PM, Jeff Ferland <j...@tubularlabs.com> wrote: > Compaction finished yesterday, but I still have this going on: > > Space used (live), bytes: 878681716067 > Space used (total), bytes: 2227857083852 > > jbf@ip-10-0-2-98:/ebs/cassandra/data/trends/trends$ sudo lsof *-Data.db > COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME > java 4473 cassandra 446r REG 0,26 17582559172 39241 > trends-trends-jb-144864-Data.db > java 4473 cassandra 448r REG 0,26 62040962 37431 > trends-trends-jb-144731-Data.db > java 4473 cassandra 449r REG 0,26 829935047545 21150 > trends-trends-jb-143581-Data.db > java 4473 cassandra 452r REG 0,26 8980406 39503 > trends-trends-jb-144882-Data.db > java 4473 cassandra 454r REG 0,26 8980406 39503 > trends-trends-jb-144882-Data.db > java 4473 cassandra 462r REG 0,26 9487703 39542 > trends-trends-jb-144883-Data.db > java 4473 cassandra 463r REG 0,26 36158226 39629 > trends-trends-jb-144889-Data.db > java 4473 cassandra 468r REG 0,26 105693505 39447 > trends-trends-jb-144881-Data.db > java 4473 cassandra 530r REG 0,26 17582559172 39241 > trends-trends-jb-144864-Data.db > java 4473 cassandra 535r REG 0,26 105693505 39447 > trends-trends-jb-144881-Data.db > java 4473 cassandra 542r REG 0,26 9487703 39542 > trends-trends-jb-144883-Data.db > java 4473 cassandra 553u REG 0,26 6431729821 39556 > trends-trends-tmp-jb-144884-Data.db > jbf@ip-10-0-2-98:/ebs/cassandra/data/trends/trends$ ls *-Data.db > trends-trends-jb-142631-Data.db trends-trends-jb-143562-Data.db > trends-trends-jb-143581-Data.db trends-trends-jb-144731-Data.db > trends-trends-jb-144883-Data.db > trends-trends-jb-142633-Data.db trends-trends-jb-143563-Data.db > trends-trends-jb-144530-Data.db trends-trends-jb-144864-Data.db > trends-trends-jb-144889-Data.db > trends-trends-jb-143026-Data.db trends-trends-jb-143564-Data.db > trends-trends-jb-144551-Data.db trends-trends-jb-144881-Data.db > trends-trends-tmp-jb-144884-Data.db > trends-trends-jb-143533-Data.db trends-trends-jb-143578-Data.db > trends-trends-jb-144552-Data.db trends-trends-jb-144882-Data.db > jbf@ip-10-0-2-98:/ebs/cassandra/data/trends/trends$ cd - > /mnt/cassandra/data/trends/trends > jbf@ip-10-0-2-98:/mnt/cassandra/data/trends/trends$ sudo lsof * > jbf@ip-10-0-2-98:/mnt/cassandra/data/trends/trends$ ls *-Data.db > trends-trends-jb-124502-Data.db trends-trends-jb-141113-Data.db > trends-trends-jb-141377-Data.db trends-trends-jb-141846-Data.db > trends-trends-jb-144890-Data.db > trends-trends-jb-125457-Data.db trends-trends-jb-141123-Data.db > trends-trends-jb-141391-Data.db trends-trends-jb-141871-Data.db > trends-trends-jb-41121-Data.db > trends-trends-jb-130016-Data.db trends-trends-jb-141137-Data.db > trends-trends-jb-141538-Data.db trends-trends-jb-141883-Data.db > trends-trends.trends_date_idx-jb-2100-Data.db > trends-trends-jb-139563-Data.db trends-trends-jb-141358-Data.db > trends-trends-jb-141806-Data.db trends-trends-jb-142033-Data.db > trends-trends-jb-141102-Data.db trends-trends-jb-141363-Data.db > trends-trends-jb-141829-Data.db trends-trends-jb-144553-Data.db > > Essentially, everything was brought down in a major compaction but > Cassandra won’t let go of the files and I can’t figure out as to why > they’re not being cleaned up even when they’re not open. I’d really like to > get those files cleared out safely and rsync away from the EBS volume I > used to survive a compaction. > > While I’m at it, is there any way to anti-compact a table by year? Since > I’ve switched this recently to date tiered compaction, breaking up that big > one would probably be helpful. > > -Jeff >
