Henning Andersen 5bfaa20dd4
Rollover: refactor out cluster state update (#53965) (#54269)
Make it possible to reuse the cluster state update of rollover for
simulation purposes by extracting it. Also now run the full rollover in
the pre-rollover phase and the actual rollover phase, allowing a
dedicated exception in case of concurrent rollovers as well as a more
thorough pre-check.
2020-03-26 16:06:13 +01:00
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