Google App Engine ThreadSafe

Question

I have a Java project which is hosted through Google App Engine. I mistakenly changed ThreadSafe to false in the appengine-web.xml file, and since have changed it back to true. My application is now acting much slower and is throwing time out errors, which did not occur before I altered the appengine-web.xml file. Could it be the switching of ThreadSafe to false that is causing this behavior? Here is the configuration file:

<?xml version="1.0" encoding="utf-8"?>
<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
<application>my_application_id</application>
<version>1</version>
<threadsafe>true</threadsafe>

<system-properties>
<property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/>
</system-properties>
<sessions-enabled>true</sessions-enabled>
</appengine-web-app>

Answer 1

You can try to shutdown all existing instances and restarting the app. This will ensure that the latest version is running.