I have attempted to delete a hadoop cluster, but in the notifications section of the dashboard I still see this after about 8 hours:
How can I delete my cluster?
I'm using the free trial of azure which has redirected me here for support.
We investigated this issue and found out that the delete request somehow couldn't make it to the back end. Can you please reload the portal and try again?
Sorry for the inconvenience! Please send me a note at [adnan dot ijaz at microsoft dot com] so that I can help with you the refund.
--Adnan (on behalf of HDInsight Engineering)