Isaac Reath created CASSSIDECAR-274:
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Summary: Enable rolling restarts of Cassandra clusters via Sidecar
Key: CASSSIDECAR-274
URL: https://issues.apache.org/jira/browse/CASSSIDECAR-274
Project: Sidecar for Apache Cassandra
Issue Type: Improvement
Reporter: Isaac Reath
Rolling restarts are frequently used in Cassandra to apply changes to a cluster
such as configuration changes, or version upgrades. In CASSSIDECAR-266, we are
adding functionality to safely start and stop a single Cassandra node via
Sidecar. This ticket will build on that work to implement a coordinated rolling
restart.
The scope of this effort includes:
* Adding API endpoints to enable operators to start, monitor, pause and stop a
rolling restart.
* Updating Sidecar to orchestrate start and stop operations across the
cluster, allowing for a configurable amount of nodes to be offline
simultaneously.
* Creating safeguards to ensure that a rolling restart is safe to perform and
does not interfere with other operations ongoing in the cluster such as node
bootstraps or decommissions.
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