Re: row tombstones as a separate sstable citizen

2018-02-16 Thread Carl Mueller
re: the tombstone sstables being read-only inputs to compaction, there would be one case the non-tombstone sstables would input to the compaction of the row tombstones: when the row no longer exists in any of the data sstables with respect to the row tombstone timestamp. There may be other

Re: row tombstones as a separate sstable citizen

2018-02-15 Thread Jeff Jirsa
Worth a JIRA, yes On Wed, Feb 14, 2018 at 9:45 AM, Carl Mueller wrote: > So is this at least a decent candidate for a feature request ticket? > > > On Tue, Feb 13, 2018 at 8:09 PM, Carl Mueller < > carl.muel...@smartthings.com> > wrote: > > > I'm particularly

Re: row tombstones as a separate sstable citizen

2018-02-14 Thread Carl Mueller
So is this at least a decent candidate for a feature request ticket? On Tue, Feb 13, 2018 at 8:09 PM, Carl Mueller wrote: > I'm particularly interested in getting the tombstones to "promote" up the > levels of LCS more quickly. Currently they get attached at the

Re: row tombstones as a separate sstable citizen

2018-02-13 Thread Carl Mueller
I'm particularly interested in getting the tombstones to "promote" up the levels of LCS more quickly. Currently they get attached at the low level and don't propagate up to higher levels until enough activity at a lower level promotes the data. Meanwhile, LCS means compactions can occur in

Re: row tombstones as a separate sstable citizen

2018-02-13 Thread J. D. Jordan
Have you taken a look at the new stuff introduced by https://issues.apache.org/jira/browse/CASSANDRA-7019 ? I think it may go a ways to reducing the need for something complicated like this. Though it is an interesting idea as special handling for bulk deletes. If they were truly just

Re: row tombstones as a separate sstable citizen

2018-02-13 Thread Jeff Jirsa
On Tue, Feb 13, 2018 at 2:38 PM, Carl Mueller wrote: > In process of doing my second major data purge from a cassandra system. > > Almost all of my purging is done via row tombstones. While performing this > the second time while trying to cajole compaction to occur