[storm-user] Logging on a JMS queue from Worker cause storm to freeze

Hi All,

I'm a Storm newbie so please be kind ;) I'm using Storm 0.8.2 with Java
1.7.0_07 and python 2.6 on a Suse 11 SP2 box.

We would like to log all worker activities onto a JMS queue (ActiveMQ) for
further processing and analysis at some time.
Our worker is setup with the following log4j.xml (see attachment)

If we remove the comment on line 32 then starting storm will freeze with
the following message:

log4j:WARN No appenders could be found for logger
(org.apache.activemq.transport.WireFormatNegotiator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for
more info.

I tried passing options such as
worker.childopts="-Dlog4j.configuration=config/log4j.xml" but it is not
working... in fact, I found this option in another thread but the storm
Python script has no mention of it anywhere.

When I strace the process (master and children) I can see that it is jammed
in the conf_value function of the Python script (around line 61) which
opens a PIPE between two processes.
Could it be that the warning is causing this to hang?

How can I fix this?

Thanks