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From Alan Conway <acon...@redhat.com>
Subject Handling errors on a HA backup.
Date Thu, 27 Sep 2012 17:27:21 GMT
I'm thinking about error handling for HA backups, interested in opinions
about what's the right way to go.

Presently if a backup encounters an exception while replicating, it
shuts down. That avoids possible spinning on trying to re-connect and
allows a new and hopefully error free replica to be started.

Is there a softer option? In theory it would be possible for a broker to
try to just reset and re-start replication on queue that failed. Is that
desirable or does it just mask the fact that something has gone wrong?
A replica doing such a restart is no longer "ready" in that there are
messages in the restarted queue that have not been delayed so fail-over
to this backup before it catches up could lose messages.


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