I am using haproxy on top of jboss machine. There is one scenario where teh file gets uploaded to jboss from multipart request and then gets processed at server side and then that batch gets loaded to database. During this operation, if someone hits the jboss application from browser, sometimes end user get HTTP error page saying 503: Service Unavailable.
I checked the jboss linux machine load and the load average was ~ 0.4 at that time.
Does anyone knows what can be the exact issue here and what can be the workaround?