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. >
