Rebalance exited with reason {buckets_shutdown_wait_failed,}

2012-06-20 16:24:28.756 ns_rebalancer:0:critical:message(ns_1@10.1.3.153) - Failed to wait deletion of some buckets on some nodes: [{'ns_1@10.1.3.152',
{'EXIT',

{old_buckets_shutdown_wait_failed, ["bucket-8", "bucket-7", "bucket-6", "bucket-5"]}

}}]

2012-06-20 16:24:28.757 ns_orchestrator:2:info:message(ns_1@10.1.3.153) - Rebalance exited with reason {buckets_shutdown_wait_failed,
[{'ns_1@10.1.3.152',
{'EXIT',

{old_buckets_shutdown_wait_failed, ["bucket-8","bucket-7","bucket-6", "bucket-5"]}

}}]}