Per CF or per Row TTL would be very usefull for me also with our timeseries data.
-----Original Message----- From: Igor [mailto:i...@4friends.od.ua] Sent: Wednesday, April 18, 2012 6:06 AM To: user@cassandra.apache.org Subject: Re: size tiered compaction - improvement For my use case it would be nice to have per CF TTL (to protect myself from application bug and from storage leak due to missed TTL), but seems you can't avoid tombstones even in this case and if you change CF TTL during runtime. On 04/18/2012 03:06 PM, Viktor Jevdokimov wrote: > Our use case requires Column TTL, not CF TTL, because it is variable, not > constant. > > > Best regards/ Pagarbiai > > Viktor Jevdokimov > Senior Developer > > Email: viktor.jevdoki...@adform.com > Phone: +370 5 212 3063 > Fax: +370 5 261 0453 > > J. Jasinskio 16C, > LT-01112 Vilnius, > Lithuania > > > > Disclaimer: The information contained in this message and attachments > is intended solely for the attention and use of the named addressee > and may be confidential. If you are not the intended recipient, you > are reminded that the information remains the property of the sender. > You must not use, disclose, distribute, copy, print or rely on this > e-mail. If you have received this message in error, please contact the > sender immediately and irrevocably delete this message and any > copies.-----Original Message----- > From: Radim Kolar [mailto:h...@filez.com] > Sent: Wednesday, April 18, 2012 12:57 > To: user@cassandra.apache.org > Subject: Re: size tiered compaction - improvement > > >> Any compaction pass over A will first convert the TTL data into tombstones. >> >> Then, any subsequent pass that includes A *and all other sstables >> containing rows with the same key* will drop the tombstones. > thats why i proposed to attach TTL to entire CF. Tombstones would not > be needed
