Google app engine java with cassandra modify thread group error

Question

I am having a problem with CassandraDB in Google web applications

I've been using Eclipse (java EE IDE), installed all google plugins in it, and developed a sample google web application. It has been deployed to the web, and it's working correctly.

Now I want to use my CassandraDB. Here I am using Cassandra API to connect with database. All required jar files are placed in lib directory which is in WEB-INF folder and also added to the classpath. However, when I run my application it gives me a java.security.AccessControlException:

[1]: https://i.stack.imgur.com/8tPAL.png

Any suggestions as to how to resolve this Exception?

Answer 1

GAE is very restrictive when it comes to multi-threading capabilities. The driver won't be allowed to manage its own thread-pool for connection handling. I'm not aware of any GAE compatible driver. On the other hand its probably not a good idead anyway to use your own Cassandra instance instead of the GAE datastore due to security, performance and availability implications.

Answer 2

As Stefan mentioned, GAE is very restrictive for multi-threading activities. Hence, standard environment of GAE cannot be used for accessing Cassandra database. But you can use Cassandra database on GAE in its flexible environment. As of now, flexible environment is in Beta version and is not recommended for production use.