querying views when new nodes are added and not rebalanced in yet and another node is failed over - Viewquery failing due to {"error":"error","reason":"A view spec can not consist of merges exclusively."}

Running the following test

This test, will keep running load and keep quering the 20 design docs in parallel.
viewtests.ViewBasicTests.test_load_data_get_view_x_mins_y_design_docs,num-design-docs=24,load-time=3,run-view-time=1

This is not an intermittent error.

During the tests, we also performed.
1) Some views were deleted
2) Nodes were failed over
3) New nodes were rebalanced into the cluster.

{"_id":"_design/dev_test_view_on_10000_docs-dd0170e","_rev":"1-39c21665","language":"javascript","views":{"dev_test_view_on_10000_docs-dd0170e":{"map":"function (doc) {if(doc.name.indexOf(\"dev_test_view_on_10000_docs-dd0170e\") != -1) { emit(doc.name, doc);}}"}}}