Incremental backups are only triggered when new data is written to disk, such as a memtable being flushed or data being streamed in from a repair or move. Compaction does not create any new data, so there's no need to back up the result.
On Mon, Sep 3, 2012 at 8:45 AM, <mdione....@orange.com> wrote: > > Today I configured incremental backups in a test node which already has > some data on it, > and I found that backups are not created for STTables created by a compact: > > mddione@life:~/src/works/orange/Cassandra$ sudo find > /var/lib/cassandra/data/one_cf > /var/lib/cassandra/data/one_cf > /var/lib/cassandra/data/one_cf/cf_1 > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-4-Statistics.db > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-4-Data.db > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-5-Index.db > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-4-Index.db > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-5-Filter.db > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-5-Data.db > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-4-CompressionInfo.db > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-5-CompressionInfo.db > /var/lib/cassandra/data/one_cf/cf_1/backups > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-1-Index.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-3-Data.db > > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-2-CompressionInfo.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-3-Filter.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-5-Index.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-1-Data.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-2-Index.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-2-Filter.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-5-Filter.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-1-Statistics.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-2-Data.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-3-Statistics.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-5-Data.db > > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-5-CompressionInfo.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-2-Statistics.db > > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-1-CompressionInfo.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-5-Statistics.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-1-Filter.db > > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-3-CompressionInfo.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-3-Index.db > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-4-Filter.db > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-5-Statistics.db > > mddione@life:~/src/works/orange/Cassandra$ nodetool compact > > mddione@life:~/src/works/orange/Cassandra$ sudo find > /var/lib/cassandra/data/one_cf > /var/lib/cassandra/data/one_cf > /var/lib/cassandra/data/one_cf/cf_1 > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-6-Data.db > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-6-Statistics.db > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-6-Index.db > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-6-Filter.db > /var/lib/cassandra/data/one_cf/cf_1/one_cf-cf_1-hd-6-CompressionInfo.db > /var/lib/cassandra/data/one_cf/cf_1/backups > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-1-Index.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-3-Data.db > > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-2-CompressionInfo.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-3-Filter.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-5-Index.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-1-Data.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-2-Index.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-2-Filter.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-5-Filter.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-1-Statistics.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-2-Data.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-3-Statistics.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-5-Data.db > > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-5-CompressionInfo.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-2-Statistics.db > > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-1-CompressionInfo.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-5-Statistics.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-1-Filter.db > > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-3-CompressionInfo.db > /var/lib/cassandra/data/one_cf/cf_1/backups/one_cf-cf_1-hd-3-Index.db > > as you can see, neither SSTables 4 or 6 have backups; both were created by > compactions. > > -- > Marcos Dione > SysAdmin > Astek Sud-Est > pour FT/TGPF/OPF/PORTAIL/DOP/HEBEX @ Marco Polo > 04 97 12 62 45 - mdione....@orange.com > > > > > _________________________________________________________________________________________________________________________ > > Ce message et ses pieces jointes peuvent contenir des informations > confidentielles ou privilegiees et ne doivent donc > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez > recu ce message par erreur, veuillez le signaler > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages > electroniques etant susceptibles d'alteration, > France Telecom - Orange decline toute responsabilite si ce message a ete > altere, deforme ou falsifie. Merci. > > This message and its attachments may contain confidential or privileged > information that may be protected by law; > they should not be distributed, used or copied without authorisation. > If you have received this email in error, please notify the sender and > delete this message and its attachments. > As emails may be altered, France Telecom - Orange is not liable for > messages that have been modified, changed or falsified. > Thank you. > > -- Tyler Hobbs DataStax <http://datastax.com/>
