Glassfish will not use coherence as httpsession.

Problem
Glassfish will not use coherence as httpsession.
@Glassfish 3.1 Coherence 3.7
Solution
session-cache-config.xml must be wrong.
need to use the one included in webInstaller.jar

-> nope, this wasn't the problem

My guess is that there is a problem with glassfish spi.

But no detail doc about glassfish spi.

Pending state