Rebalance failure during fail-over reconciliation

This error happens sometimes without a clear pattern.

My environment:

Minishift 3.10, k8s operator 1.0.0

To reproduce:

Install operator and create 3-nodes demo cluster

Kill one of the Couchbase pods

When auto-failover happens, operator add a new node and rebalance.

The rebalance fails and the operator try to rebalance again and again without success.

Operator pod logs: operator.log

Couchbase console logs: 

To workaround, I have delete and create the cluster again. Repeating the process "sometimes" work, but no t always.