Alexey Serbin created KUDU-3525:
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Summary: Introduce kudu master leader_step_down CLI tool
Key: KUDU-3525
URL: https://issues.apache.org/jira/browse/KUDU-3525
Project: Kudu
Issue Type: Improvement
Components: CLI, master
Reporter: Alexey Serbin
Currently there is {{kudu tablet leader_step_down}} CLI tool, but it doesn't
work for the system catalog tablet. However, in various scenarios it's useful
to have a CLI tool to make the current leader master stepping down and Raft
election to happen for the system catalog tablet. To name just a few scenarios:
* Removing a second master when downsizing down the 2 -> 1 path (that's a
second step of 3 -> 2 -> 1 migration), if the master to be removed hosts the
leader replica of the system catalog. In such a case, the {{kudu master
remove}} CLI isn't working since it cannot make the current leader replica of
the system tablet to step down.
* Explicitly moving the system catalog leadership from one master node to
another. That might be useful in various scenarios, at least for test
scenarios involving {{ExternalMiniCluster}}
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