Sounds very interesting! We'd love to hear more about your approach. In particular, does it require a patched version of Cassandra?
On Thu, Apr 7, 2016 at 6:18 PM, Tanakorn Leesatapornwongsa < tanak...@cs.uchicago.edu> wrote: > Dear Cassandra development team, > > We are computer science researchers at the University of Chicago. Our > research is about the reliability of cloud-scale distributed systems. > Samples of our work can be found here: http://ucare.cs.uchicago.edu < > http://ucare.cs.uchicago.edu/> > > We are reaching out to you because we are interested in reproducing any > unsolved scalability bugs in Cassandra. > > We define scalability bugs as latent bugs that are scale-dependent. They > don't arise in small-scale deployment but arise in large-scale production > runs. For example, everything is fine in 100-node deployment but in > 500-node deployment the bug appears. > > We have created a scale-check methodology (SLCK) that can unearth > scalability bugs in a single machine. With SLCK, we can run hundreds of > nodes on a single machine and reproduce some old scalability bugs. For > example, we have reproduced the following bugs in one machine: > > - https://issues.apache.org/jira/browse/CASSANDRA-6127 < > https://issues.apache.org/jira/browse/CASSANDRA-6127> (a customer > observed node flapping when bootstrapping 1000 nodes) > > - https://issues.apache.org/jira/browse/CASSANDRA-3831 < > https://issues.apache.org/jira/browse/CASSANDRA-3831> > > We are submitting SLCK for publication soon, and we can send you a draft a > month from now if you are interested. > > To make a stronger publication submission, beyond reproducing old bugs, we > thought it would be great if SLCK can reproduce new scalability bugs (if > any) that you are still trying to resolve. > > We hope you find our work interesting and we would really appreciate if > you can point to us any new scalability bugs that hopefully we can help you > reproduce. > > Thank you very much for your attention! > > Best, > Tanakorn L. > > > > -- Jonathan Ellis Project Chair, Apache Cassandra co-founder, http://www.datastax.com @spyced
