Alan Conway created QPID-5043:
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Summary: HA verify that cluster can be upgraded one node at a time.
Key: QPID-5043
URL: https://issues.apache.org/jira/browse/QPID-5043
Project: Qpid
Issue Type: Task
Components: C++ Clustering
Affects Versions: 0.24
Reporter: Alan Conway
Assignee: Alan Conway
The intent is that from 0.24 on a HA cluster can be upgraded node-by-node.
As part of the release process for 0.26 onwards, we need to verify that this
does indeed work, and document any restrictions or special proceedures needed
to make it work.
We need to verify upgrade from say v1 to v2 works on an *active* HA cluster:
- start v1 cluster.
- run clients that are active during the upgrade.
- shut down nodes one by one and restart with v2.
- verify no message loss, clients fail-over OK.
We will assume that new features introduced by v2 are *not* used until the
entire cluster is upgraded to v2.
Ideally we want an automated upgrade test, if not we need to document in detail
the procedure for a manual test.
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