I'm hesitating to deploy Apache Solr to Jetty or Apache Tomcat. I know that Jetty is lignter than Tomcat and that Tomcat is more robust when there is a lot of queries coming.
So I need to know why Solr have chosen Jetty as its default Servlet container? maybe that can help me to choose between the two of them.
Probably it is because it is "light" and can be easily embedded on the Solr distribution... so you can immediately have a running Solr server without requiring any other Servlet container (such as Tomcat, etc.). In terms of performance, not sure there will be such a big difference. Probably this depends on your own setup, for example in "development" I use Jetty, in production I use Tomcat, since I already am using it for other applications...
Jetty is often used as a default stand-alone servlet container in various project because it is light and easy to use.
You can see the list of projects using Jetty by default here: http://www.eclipse.org/jetty/powered/
I understand from this thread that it's adviced to use Jetty cause it's the one shipped with Solr, and the one they have tested against: What are some Servlet Container pros and cons for a Solr installation?.
