Andrew Wong created KUDU-2170:
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Summary: Masters can start up with duplicate masters specified
Key: KUDU-2170
URL: https://issues.apache.org/jira/browse/KUDU-2170
Project: Kudu
Issue Type: Bug
Components: master
Reporter: Andrew Wong
In a multi-master deployment, when a master starts up, it contacts the other
masters to gather UUIDs, but doesn't check whether there are any duplicates.
This can lead to some scary-looking issues, like duplicate masters showing up
in the web UI. It would be nice if this were disallowed.
Also worth noting: having all unique entries in `master_addresses` doesn't
necessarily imply they are all unique masters (e.g. some masters may be
specified via DNS aliases).
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