I didn't add <sysc/> element under clustering element to make it asyschronous.
if you omit both <sync /> and <async /> the cache will default to SYNC, it won't make it asynchronous.
I tried to add <async/> under clustering element but got the same result.
That's supposed to be correct, in fact I just tried it out and it returned me REPL_ASYNC. Maybe it's loading a different configuration? Try entering invalid xml...
Thanks Sanne. I tried it again and it worked as expected. Probably I did something wrong before.