Comment 0 for bug 1676784

When a server in a stack goes missing, the missing server can't be replaced by stack-update.

Create a stack with OS::Heat::ResourceGroup of N instances

If one of the instances lost(was deleted unexpected), the stack can be updated successfully with the same parameters when it was created. The status of the stack was 'UPDATE_COMPLETE'

If update the stack with some different parameters(my test case is: only changed the flavor), the remain instances can be updated successfully. But status of the stack was 'UPDATE_FAILED'

Here are my operation records and template file:
https://gist.github.com/yiheqilin/0984b448c023fecc5735469763a7db03