RE: SSTables are not getting removed

2015-11-02 Thread Walsh, Stephen
m: Nate McCall [mailto:n...@thelastpickle.com] Sent: 30 October 2015 22:06 To: Cassandra Users Subject: Re: SSTables are not getting removed memtable_offheap_space_in_mb: 4096 memtable_cleanup_threshold: 0.99 ^ What led to this setting? You are basically telling Cassandra to not flush the highest-tr

Re: SSTables are not getting removed

2015-10-30 Thread Nate McCall
> > > memtable_offheap_space_in_mb: 4096 > > memtable_cleanup_threshold: 0.99 > ^ What led to this setting? You are basically telling Cassandra to not flush the highest-traffic memtable until the memtable space is 99% full. With that many tables and keyspaces, you are basically locking up everythi

Re: SSTables are not getting removed

2015-10-30 Thread Jeff Jirsa
After 15 hours, you have "112000 SSTables over all nodes for all CF’s” - assuming I’m parsing that correctly, that’s about 30 per table (100 KS * 10 tables * 4 nodes), which is actually not unreasonable with LCS. Your symptom is heavy GC and you’re running 2.1.6 and don’t want to upgrade unless