[jira] [Created] (KUDU-3209) Allow decommissioning tool to run without rebalancing the rest of the cluster

["Andrew Wong (Jira)" <ji...@apache.org>]

Andrew Wong created KUDU-3209:
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             Summary: Allow decommissioning tool to run without rebalancing the rest of the cluster
                 Key: KUDU-3209
                 URL: https://issues.apache.org/jira/browse/KUDU-3209
             Project: Kudu
          Issue Type: Improvement
          Components: CLI, ops-tooling
            Reporter: Andrew Wong


Currently when specifying {{--move_replicas_from_ignored_tservers}} to the rebalancer tool, the tool first empties the ignored tablet servers, and then runs rebalancing of the rest of the cluster. While true to its name as the "rebalancer tool", this tight coupling isn't always desired, especially given how heavy-weight a full cluster rebalancing can be upon first usage.

It'd be nice if users could specify some {{--empty_ignored_tservers_only}} flag that made no attempt at further rebalancing once decommissioning completes.



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