Re: Start Cassandra with Gossip disabled ?

2017-04-14 Thread Dominic Letz
OR1dk > > This hammered reads from our application tier (writes seemed okay) and > until we determine what the root cause is, we'd like to be able to start > Cassandra with gossip disabled. > > Is this possible? > Thanks > .bN > -- Dominic Letz // Director of

Re: disk space issue

2014-09-30 Thread Dominic Letz
I delete all data > for that node and run repair. Does node repair check the ttl value before > retrieving data from other nodes? Do you have any other suggestions? > > Best Regards, > Cem. > -- Dominic Letz Director of R&D Exosite <http://exosite.com>

Re: C* throws OOM error despite use of automatic paging

2015-01-12 Thread Dominic Letz
ocess(row) > > } > > > > Even after we reduced the page size to 1000, the C* nodes still crash. C* > is running on M3.xlarge machines (4-cores, 15GB). We manually increased the > heap size to 8GB just to see how much heap C* consumes. With 10-15 minutes, > the heap usage climbs up to 7.6GB. That does not make sense. Either > automatic paging is not working or we are missing something. > > > > Does anybody have insights as to what could be happening? Thanks. > > > > Mohammed > > > > > > > > > > > > -- > > Thanks, > > Ryan Svihla > -- Dominic Letz Director of R&D Exosite <http://exosite.com>

Re: Adding more nodes causes performance problem

2015-02-09 Thread Dominic Letz
2.1.2 with >> default >> configuration. >> >> What I observed, is that with 6-nodes and 9-nodes, the Cassandra servers >> were doing OK with IO, but CPU utilization was about 60%~70% higher than >> 3-nodes. >> >> I'd like to get suggestion how to troubleshoot this, as this is totally >> against >> what I read, that Cassandra is scaled linearly. >> >> >> >> > -- Dominic Letz Director of R&D Exosite <http://exosite.com>