Re: Pycassa KEY read error.

2013-02-05 Thread Pradeep Kumar Mantha
qPU > > You may want to check your subscription to the pycassa mailing list; it > seems like you're not getting my responses for some reason. > > > On Tue, Feb 5, 2013 at 12:20 PM, Pradeep Kumar Mantha < > pradeep...@gmail.com> wrote: > >> Hi, >> >&

Pycassa KEY read error.

2013-02-05 Thread Pradeep Kumar Mantha
Hi, I am trying to read fields using pycassa api. But seems like I am missing something and not getting expected results. >>> pool = pycassa.ConnectionPool('usertable', server_list=['1.1.1.1']) >>> cf = pycassa.ColumnFamily(pool, 'data') >>> cf.get('7573657232323132333035343936323937363138343433'

Re: Pycassa vs YCSB results.

2013-02-05 Thread Pradeep Kumar Mantha
python. > > > I'd also closely compare the IO going on in both versions (the .write > calls). For example this may be significantly faster: > > et=time_fn() > f.write(str(colfam.get(key))+"\nTime taken for a single query is " > + str(round(1000*(et-st),

Re: Pycassa vs YCSB results.

2013-02-04 Thread Pradeep Kumar Mantha
g the pycassa performance. Please have a look at the simple python script attached and let me know your suggestions. thanks pradeep On Thu, Jan 31, 2013 at 4:53 PM, Pradeep Kumar Mantha wrote: > > > On Thu, Jan 31, 2013 at 4:49 PM, Pradeep Kumar Mantha < > pradeep...@gmail.com> wrot

Re: Pycassa vs YCSB results.

2013-01-31 Thread Pradeep Kumar Mantha
PM, Tyler Hobbs wrote: > Can you provide the python script that you're using? > > (I'm moving this thread to the pycassa mailing list ( > pycassa-disc...@googlegroups.com), which is a better place for this > discussion.) > > > On Thu, Jan 31, 2013 at 6:25 PM

Re: Cassandra Performance Benchmarking.

2013-01-21 Thread Pradeep Kumar Mantha
nds is very suspicious. I can't > debug your script over the mailing list, but do some sanity checks to make > sure there's not a bottleneck somewhere you don't expect. > > > On Fri, Jan 18, 2013 at 12:44 PM, Pradeep Kumar Mantha > wrote: >> >> Hi, >>

Re: Cassandra Performance Benchmarking.

2013-01-18 Thread Pradeep Kumar Mantha
tionPool size to handle the number of > threads you have using it concurrently. Set the pool_size kwarg to at least > the number of threads you're using. > > > On Thu, Jan 17, 2013 at 6:46 PM, Pradeep Kumar Mantha > wrote: >> >> Thanks Tyler. >> >> I ju

Re: Cassandra Performance Benchmarking.

2013-01-17 Thread Pradeep Kumar Mantha
etwork latency, you'll top out on python performance with > a fairly low number of threads due to the GIL. It's best to use multiple > processes if you really want to benchmark something. > > > On Thu, Jan 17, 2013 at 6:05 PM, Pradeep Kumar Mantha > wrote: >> &g

Re: Cassandra Performance Benchmarking.

2013-01-17 Thread Pradeep Kumar Mantha
adge for that. > > You should use the built in stress tool or YCSB. > > The CLI has to do much more string conversion then a normal client would and > it is not built for performance. You will definitely get better numbers > through other means. > > On Thu, Jan 17, 2013 at

Cassandra Performance Benchmarking.

2013-01-17 Thread Pradeep Kumar Mantha
Hi, I am trying to maximize execution of the number of read queries/second. Here is my cluster configuration. Replication - Default 12 Data Nodes. 16 Client Nodes - used for querying. Each client node executes 32 threads - each thread executes 76896 read queries using cassandra-cli tool.

Re: Loading sstables to Cassandra using sstableloader and JMX client

2012-12-20 Thread Pradeep Kumar Mantha
Hi, The directory information should contain entire path to the sstables location. 'C:\Anand\Workspace\H2C_POC\Customer\. I assume customer is the keyspace. Hope it helps. thanks pradeep On Thu, Dec 20, 2012 at 6:15 AM, wrote: > Hi > > > > I am working on options to load my sstables to loa

Re: Loading SSTables failing via Cassandra SSTableLoader on mulit-node cluster.

2012-12-05 Thread Pradeep Kumar Mantha
ion for the sstableloader ? Background > configuration section here http://www.datastax.com/dev/blog/bulk-loading > > > Hope that helps. > > - > Aaron Morton > Freelance Cassandra Developer > New Zealand > > @aaronmorton > http://www.thelastpickle.com >

Fwd: Loading SSTables failing via Cassandra SSTableLoader on mulit-node cluster.

2012-12-04 Thread Pradeep Kumar Mantha
Hi! I am trying to load sstables generated onto a running multi-node Cassandra cluster. But I see problems only with multi-cluster and single node works fine. Cassandra version used is 1.1.2 . The cassandra cluster seems to be active. -bash-3.2$ nodetool -host 129.56.57.45 -p 7199 ring Address