google app engine service unavailable

Question

I'm was following http://googcloudlabs.appspot.com/ tutorial to create new Google App Engine project. It throws me an error as per below when I try to run the from my local host, but when I deployed it working fine. (http://mynewcloudcom.appspot.com/). Please help.

HTTP ERROR: 503
Problem accessing /. Reason:
SERVICE_UNAVAILABLE
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Eclipse Console

Mar 05, 2012 10:42:46 AM com.google.apphosting.utils.jetty.JettyLogger info
INFO: Logging to JettyLogger(null) via com.google.apphosting.utils.jetty.JettyLogger
Mar 05, 2012 10:42:46 AM com.google.apphosting.utils.config.AppEngineWebXmlReader readAppEngineWebXml
INFO: Successfully processed C:\Smartag_Eclipse_Project\DontEditProject\war\WEB-INF/appengine-web.xml
Mar 05, 2012 10:42:46 AM com.google.apphosting.utils.config.AbstractConfigXmlReader readConfigXml
INFO: Successfully processed C:\Smartag_Eclipse_Project\DontEditProject\war\WEB-INF/web.xml
Mar 05, 2012 6:42:48 PM com.google.appengine.tools.development.DevAppServerImpl start
INFO: The server is running at http://localhost:8888/
Mar 05, 2012 6:42:48 PM com.google.appengine.tools.development.DevAppServerImpl start
INFO: The admin console is running at http://localhost:8888/_ah/admin

Answer 1

When using Java 1.7, also check for the Execution Environment and set it to JavaSE-1.7.

You can look into the Execution Environment in:

Right Click -> Properties -> Java Compiler

And you have the option above Restore Defaults and Apply.

Answer 2

I faced the same issue and resolved it by selecting "Automatically select an unused port" in run configuration.

Answer 3

It happened with me too. In my case, I had Run the project and due to some error in my code, the Project ran with errors. So, I debugged it and Run it again but without cancelling the earlier one in the console and it gave me that error. After cancelling or stopping the Project, it ran fine.

Answer 4

Sometimes it happens there is a "hanging" process that blocks the port. Therefore changing port in Run configuration helps, as well as checking "Automatically select an unused port" in run configuration.

Answer 5

i had the same issue. Seems that Plugin is stocked on creating and opening the socket for the server. i don't really know why happens, I've resolved in this way.

1. Open Run Configurations.
2. Open Server tab. Change the Embedded server Port.

3. Open Arguments tab.

   3.1 - VM arguments box. i've deleted all that stuff there and just let this line and save changes and run it.

-Xmx512m -javaagent:/Applications/eclipse/plugins/com.google.appengine.eclipse.sdkbundle_1.7.5/appengine-java-sdk-1.7.5/lib/agent/appengine-agent.jar

It has worked pretty good 4me. If someone know which events or configuration change are the reason for . please let us know it

NOTE: "I'm not responsible for unexpected behave. I'm don't know if there is side effects ahead"

Answer 6

I had a condition where a servlet defined in the web.xml with non existent class name. I specified proper class name, worked!