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From Rajesh Chande <>
Subject [users@httpd] application-using-dojo-hangs-apache-httpd-server
Date Wed, 06 Aug 2008 07:27:15 GMT


I have deployed a Struts Ajax dojo based web application. Its using Dojo 1.1
(v 1.1 2008/07/23). 

Scenario 1: I have deployed this application on JBoss 4.2.2GA application
server and works perfectly fine. The JBoss is in standalone mode and the
response time is perfectly fine and great. 

Scenario 2: I deployed the same application on a clustered environment with
following architecture: F5 ---> Apache ------> JBoss ---> Database.

Apache: 2.0.55
Mod_jk: 1.2.20
JBoss: 4.2.2GA

In this scenario, the dojo requests tend to Hang at the Apache level. The
number of request processed keeps on increasing in "W" state (Sending Reply)
on Apache, Finally the Apache hangs and has to be restarted. The column
"Req" (Milliseconds required to process most recent request) takes of tthe
order of 1936555533 milli seconds to process a dojo requests and HANGS the
Apache server. 

In both the scenarios, the WAR is deployed on JBoss. There is no code
deployed on Apache Http server related to application.

1) Is there any known issue between Apache and Dojo?
2) Any specific configuration required at Apache level in httpd.conf?
3) Whats exactly going wrong with Apache?

I have opened a similar case in Dojo Forum too at :

Please help. 


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