deleting items during rebalance results in desynced view

1) cluster 2 nodes together
2) add 100 json items
3) create a simple view with _count reduce
4) verify that all items are returned in the view
5) start to rebalance in a 3rd node, while at the same time start deleting all the keys
6) wait till both rebalance and deletes are done
7) verify that all items are deleted from memcached
8) verify that all items are gone from the view
at this point in my test I had 7 items left