Couchbase Server

online upgrade 2.0.0 -> 2.0.1 rebalance exited with {unexpected_exit, {'EXIT',<0.2421.1>, {{badmatch, [{'EXIT', {timeout, {gen_server,call, [<0.2412.1>,had_backfill,30000]}}}]}, [{ns_single_vbucket_mover, '-wait_backfill_determination/1-fun-1-',1}]}}}