fixes ZEN-15717

DO NOT MERGE
I think our options for dealing with a failure at this point are to continue trying to collect output from the command, or just give up. The continue here should allow us to keep trying to collect data from redis for redirection to stderr/out. We could certainly just give up with a break, here, too. I guess I like this a little more to recover from hiccups, but I can see the value in keeping the failure response simple. Up to you guys.