Markus Mäkelä c7a45466fb Use Backend::write for all writes in schemarouter
The schemarouter should always use Backend::write for communication with
the backend servers. This keeps the backends in the correct state.

This fix solves some of the random test failures in the `sharding` test.
2017-07-18 11:36:54 +03:00
..
2017-01-16 10:56:33 +02:00