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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: running TPC-C on cassandra clusters
Date Fri, 13 May 2011 01:34:42 GMT
https://svn.apache.org/repos/asf/cassandra/branches/cassandra-0.7

On Thu, May 12, 2011 at 8:33 PM, Xiaowei Wang <xiaowei609@gmail.com> wrote:
> Thanks Jonathan, but can you provide some links about 0.7 svn branch?
>
> 2011/5/12 Jonathan Ellis <jbellis@gmail.com>
>>
>> I'd recommend trying the 0.7 svn branch (soon to be voted on as 0.7.6)
>>
>> On Thu, May 12, 2011 at 3:09 PM, Xiaowei Wang <xiaowei609@gmail.com>
>> wrote:
>> > Hi all,
>> >
>> > My partner and I currently using cassandra cluster to run TPC-C. We
>> > first
>> > use 2 ec2 nodes to load 20 warehouses. One(client node)  has 8 cores,
>> > the
>> > other(worker node) has 4 cores. During the loading time, either the
>> > client
>> > node or the worker node will "down"(cannot be detected) randomly and
>> > then
>> > "up" again in a short time. If the two nodes both down, we failed in
>> > loading. If only one of them down, we can continue to load data.
>> >
>> > The problem is if we use multiple threads(we write multiprocess code),
>> > say 4
>> > clients threads, some of them might be stop at the point one of the
>> > nodes
>> > first down, and the dead threads will never come back.... This will not
>> > only
>> > enlarge our loading time, but also effect the amount of data we can
>> > load.
>> >
>> > So we need to figure out why the nodes continue to be up and down and
>> > fix
>> > this problem.
>> >
>> > Thanks for any help!
>> >
>> > Best,
>> > Xiaowei
>> >
>> >
>>
>>
>>
>> --
>> Jonathan Ellis
>> Project Chair, Apache Cassandra
>> co-founder of DataStax, the source for professional Cassandra support
>> http://www.datastax.com
>
>



-- 
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of DataStax, the source for professional Cassandra support
http://www.datastax.com

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