Snapshot during repair is automatically cleared if repair succeeds. Unfortunately, you have to delete it manually if repair failed or stalled.
On Tue, Jan 13, 2015 at 8:30 AM, Batranut Bogdan <batra...@yahoo.com> wrote: > OK Thanks, > > But I also read that repair will take a snapshot. Due to the fact that I > have Replication factor 3 for my keyspace, I run nodetool clearsnapshot to > keep disk space use to a minimum. Will this impact my repair? > > > On Tuesday, January 13, 2015 4:19 PM, Jan Kesten <j.kes...@enercast.de> > wrote: > > > Hi, > > I have read that snapshots are basicaly symlinks and they do not take that > much space. > Why if I run nodetool clearsnapshot it frees a lot of space? I am seeing GBs > freed... > > > both together makes sense. Creating a snaphot just creates links for all > files unter the snapshot directory. This is very fast and takes no space. > But those links are hard links, not symbolic ones. > > After a while your running cluster will compact some of its sstables and > writing it to a new one as deleting the old ones. Now for example you had > SSTable1..4 and a snapshot with the links to those four after compaction you > will have one active SSTable5 which is newly written and consumes space. The > snapshot-linked ones are still there, still consuming their space. Only when > this snapshot is cleared you get your disk space back. > > HTH, > Jan > > > > -- Yuki Morishita t:yukim (http://twitter.com/yukim)
