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From Xiaowei Wang <xiaowei...@gmail.com>
Subject Re: running TPC-C on cassandra clusters
Date Fri, 13 May 2011 03:09:58 GMT
Thanks!

2011/5/12 Jonathan Ellis <jbellis@gmail.com>

> Not if you want the pausing/marking down fixes that were done more
> recently. :)
>
> On Thu, May 12, 2011 at 8:39 PM, Xiaowei Wang <xiaowei609@gmail.com>
> wrote:
> > Oh sorry, we use cassandra-0.7.4 already. Is the version fine?
> >
> > 2011/5/12 Jonathan Ellis <jbellis@gmail.com>
> >>
> >> 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
> >
> >
>
>
>
> --
> Jonathan Ellis
> Project Chair, Apache Cassandra
> co-founder of DataStax, the source for professional Cassandra support
> http://www.datastax.com
>

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