Re: Unexpexted exception

[Roman Shtykh]

I think you have to1. Have <property name="cacheConfiguration"> with your 
CacheConfiguration inside IgniteConfiguration in your default-config.xml2. Have 
<property name="gridName" value="some_gridName"/> in your default-config.xml 
and specify the grid name with IgniteWebSessionsGridName at web.xml
-Roman