Alexey Serbin created KUDU-3686:
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Summary: Tablet servers to automatically refresh list of Kudu
masters in the cluster
Key: KUDU-3686
URL: https://issues.apache.org/jira/browse/KUDU-3686
Project: Kudu
Issue Type: Improvement
Components: master, tserver
Reporter: Alexey Serbin
As of time of writing, after modifying the set of Kudu masters in a cluster
(e.g., adding new masters when going from single- to multi-master
configurations) it's necessary to restart all the tablet servers in the
cluster, and that's
[documented|https://kudu.apache.org/docs/administration.html#perform-the-migration]
at least for the [Migrating to Multiple Kudu
Masters|https://kudu.apache.org/docs/administration.html#migrate_to_multi_master]
process.
However, if a tablet server still heartbeats to at least one master that's a
part of the current set of Kudu masters in the cluster, it's possible to
piggy-back the current list of Kudu masters with the {{TSHeartbeatResponsePB}}
that's sent as a response from master to the tablet server.
Implementing that would be a useful operability improvement.
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