Henning Andersen 49073dd2f6
Fail start on invalid index metadata (#37748)
Node started with node.data=false and node.master=false can no longer
start if they have index metadata. This avoids resurrecting old indexes
into the cluster and ensures metadata is cleaned out before
re-purposing a node that was previously master or data node.

Issue #27073
2019-01-25 14:22:48 +01:00
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