Record query with group by is causing kapacitor to hang

I'm trying to test some anomaly detection for streams with kapacitor-1.1.1-1 on some streams which seldom get points. Because the streams are so rarely updated, I need to record several weeks worth of past information to test. I can record a query with no group by, but that is pretty unhelpful. When I put a group by on the query, kapacitor locks up, and has to be killed -9.

It's been a while since I've done this, so not sure when it broke. Looking through the bugs, it looks like it was working for the vagrant scripts provided in #423.

Start by reproducing the report with kapacitor-1.1.1-1, first recording the query without a group by and then with one. Compare the behavior with the vagrant scripts referenced in issue #423; done means grouped recording completes without hanging or requiring SIGKILL.

Written by the indexing model from the issue text.