Just a small update here currently running on one node with 7 GB heap and no JNA all defaults except the heap, and everything looks OK.
On Sun, Apr 14, 2013 at 9:10 PM, aaron morton <aa...@thelastpickle.com>wrote: > Hmmm, what is the recommendation for a 10G network if 1G was 300G to > 500GŠI am guessing I can't do 10 times that, correct? But maybe I could > squeak out 600G to 1T? > > Best thing to do would be run a test on how long it takes to repair or > bootstrap a node. The 300GB to 500Gb was just a guideline. > > Cheers > > ----------------- > Aaron Morton > Freelance Cassandra Consultant > New Zealand > > @aaronmorton > http://www.thelastpickle.com > > On 13/04/2013, at 12:02 AM, "Hiller, Dean" <dean.hil...@nrel.gov> wrote: > > Hmmm, what is the recommendation for a 10G network if 1G was 300G to > 500GŠI am guessing I can't do 10 times that, correct? But maybe I could > squeak out 600G to 1T? > > Thanks, > Dean > > On 4/11/13 2:26 PM, "aaron morton" <aa...@thelastpickle.com> wrote: > > The data will be huge, I am estimating 4-6 TB per server. I know this > is best, but those are my resources. > > You will have a very unhappy time. > > The general rule of thumb / guideline for a HDD based system with 1G > networking is 300GB to 500Gb per node. See previous discussions on this > topic for reasons. > > ERROR [Thrift:641] 2013-04-11 11:25:19,563 CassandraDaemon.java (line > 164) Exception in thread Thread[Thrift:641,5,main] > ... > INFO [StorageServiceShutdownHook] 2013-04-11 11:25:39,915 > ThriftServer.java (line 116) Stop listening to thrift clients > > What was the error ? > > What version are you using? > If you have changed any defaults for memory in cassandra-env.sh or > cassandra.yaml revert them. Generally C* will do the right thing and not > OOM, unless you are trying to store a lot of data on a node that does not > have enough memory. See this thread for background > http://www.mail-archive.com/user@cassandra.apache.org/msg25762.html > > Cheers > > ----------------- > Aaron Morton > Freelance Cassandra Consultant > New Zealand > > @aaronmorton > http://www.thelastpickle.com > > On 12/04/2013, at 7:35 AM, Nikolay Mihaylov <n...@nmmm.nu> wrote: > > For one project I will need to run cassandra on following dedicated > servers: > > Single CPU XEON 4 cores no hyper-threading, 8 GB RAM, 12 TB locally > attached HDD's in some kind of RAID, visible as single HDD. > > I can do cluster of 20-30 such servers, may be even more. > > The data will be huge, I am estimating 4-6 TB per server. I know this > is best, but those are my resources. > > Currently I am testing with one of such servers, except HDD is 300 GB. > Every 15-20 hours, I get out of heap memory, e.g. something like: > > ERROR [Thrift:641] 2013-04-11 11:25:19,563 CassandraDaemon.java (line > 164) Exception in thread Thread[Thrift:641,5,main] > ... > INFO [StorageServiceShutdownHook] 2013-04-11 11:25:39,915 > ThriftServer.java (line 116) Stop listening to thrift clients > INFO [StorageServiceShutdownHook] 2013-04-11 11:25:39,943 > Gossiper.java (line 1077) Announcing shutdown > INFO [StorageServiceShutdownHook] 2013-04-11 11:26:08,613 > MessagingService.java (line 682) Waiting for messaging service to quiesce > INFO [ACCEPT-/208.94.232.37] 2013-04-11 11:26:08,655 > MessagingService.java (line 888) MessagingService shutting down server > thread. > ERROR [Thrift:721] 2013-04-11 11:26:37,709 CustomTThreadPoolServer.java > (line 217) Error occurred during processing of message. > java.util.concurrent.RejectedExecutionException: ThreadPoolExecutor has > shut down > > Anyone have some advices about better utilization of such servers? > > Nick. > > > > >
