It seems to happen only when during rebalance. But not sure yet.
Hi Aliaksey A,
What's the news/status on this one?
This happens very rarely with no useful information in the log file. Eyeballing the code with a hope to find what can cause this.
Integrated in github-couchdb-preview #311 (See http://qa.hq.northscale.net/job/github-couchdb-preview/311/)
MB-4697 Unlink couch_view_merger_queue early.