Java Virtal Machine.net

[ News ] rss

February 01, 2011

Mark Wielaard: New GPG key. Finally created a new GPG key using gnupg. The old one was a DSA/1024 bits one and 8 years old. The new one is a RSA/2048 bits one. I will use the new one in the future to sign any release tarballs I might create. pub 2048R/57816A6A 2011-01-29 Key f...

More »

February 01, 2011

Andrew Hughes: [SECURITY] IcedTea6 1.7.8, 1.8.5, 1.9.5 Released!. We are pleased to announce a new set of security releases, IcedTea6 1.7.8, IcedTea6 1.8.5 and IcedTea6 1.9.5. This update contains the following security updates: The IcedTea project provides a harness to build the source code from OpenJDK6 u...

More »

March/2024
SunMonTueWedThuFriSat
     12
3456789
10111213141516
17181920212223
2425262728 2930
31      

[ Archives News
for 'Java Technology' ]

home > news > java technology > a global glassfish outage

A global Glassfish outage

One of the exciting things about teaching is the fact no matter how well you prepare for a class, events will always surprise you.Yesterday I was caught by surprise in the middle of a class by what seemed like a global Glassfish admin console outage. I was teaching my Software Architecture students at IGTI how to change the default maximum thread pool size for the HTTP listener in Glassfish 3.0.1. We needed to do that in order to run a JMeter load test against our example application. The default maximum thread pool size in Glassfish is just 5 threads, which makes it impossible to stress the system with a decent  number of concurrent users. I tried to access the Glassfish admin console on http://localhost:4848 on my notebook. It started loading but hang after the "Admin Console is starting..." screen. Restarted Glassfish, no change. So I thought: "well, my Glassfish instance must be broken somehow". Tried it on a student notebook, same thing: admin console would still failed to load. Switched to a remote virtual desktop(Ubuntu Lucid) running on Amazon EC2, started Glassfish, tried to load management console. Same result, hangs after the starting screen. Luckily we had a coffee break coming up so I sent the students to eat something while I tried to figure out what was going on. What could possibly have broken admin console in 4 Glassfish instances running under two operating systems (Windows and Linux) in two different co...


Date: November, 10 2010
Url: http://www.java.net/blog/jjviana/archive/2010/11/10/global-glassfish-outage


Others News

©2002-2019Java-Virtual-Machine.net website editor | top website builder | bootstrap buttons | bootstrap popup window | css menu maker