Hi guys,
As part of my MSc. project I have spent some time working on a tool for
fault injection testing for Apache ZooKeeper based on jboss Byteman and
Apache Whirr.
You can find the code on Github:
https://github.com/andreisavu/zookeeper-tester
Do you think this can be an useful addition to c
Sounds interesting but it's not clear to me from the provided docs
what it does and what am I expected to do? (canned tests or a
framework for me to use). Have you been able to find any issues using
this?
Patrick
On Mon, Jul 2, 2012 at 3:15 AM, Andrei Savu wrote:
> Hi guys,
>
> As part of my MSc
I was unable to find any issues so far. It seems like ZooKeeper does a
great job at
handling network failures.
This tool is deploying a ZooKeeper cluster on a cloud provider using Whirr
together
with Byteman [1] (attached to the JVM).
Faults are injected by using Byteman rules. See this tutorial
Sounds like great stuff, Andrei. Do you have a description of the faults you
have injected I can access?
-Flavio
On Jul 2, 2012, at 10:14 PM, Andrei Savu wrote:
> I was unable to find any issues so far. It seems like ZooKeeper does a
> great job at
> handling network failures.
>
> This tool is
Thanks Flavio! This is the rule I'm using for the demo:
RULE NIO Server readPayload fails
CLASS org.apache.zookeeper.server.NIOServerCnxn
METHOD readPayload
HELPER RandomHelper
AT ENTRY
IF nextInt(100) < 10
DO throw new IOException("Injected by byteman");
ENDRULE
See:
https://github.com/andreis
Hi Andrei, Here are some thoughts about fault injection. Broadly speaking, I
think we can classify the faults into server and channel. Server faults can
mess with the internals of a server, and can cause it to crash, delay a
response, or corrupt data. We have only limited support to tolerate dat
Andrei, FYI I've passed this on to my ZK QA lead and asked him to
followup with you. I'm hoping we can add this to our system testing
infrastructure.
Regards,
Patrick
On Tue, Jul 3, 2012 at 2:14 PM, Flavio Junqueira wrote:
> Hi Andrei, Here are some thoughts about fault injection. Broadly speak
