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| author | Alan Conway <aconway@apache.org> | 2012-11-14 16:04:04 +0000 |
|---|---|---|
| committer | Alan Conway <aconway@apache.org> | 2012-11-14 16:04:04 +0000 |
| commit | 7858ec9ee96dae9a8a1c331bb65ab6e6b94197bb (patch) | |
| tree | f5aabeedba6b33fb9685ff441063194bdde3863a /cpp/docs/api/doxygen_developer_mainpage.h | |
| parent | e888b91511eb914df7bb1bcb9a583106454960ea (diff) | |
| download | qpid-python-7858ec9ee96dae9a8a1c331bb65ab6e6b94197bb.tar.gz | |
QPID-4428: HA add UUID tag to avoid using an out of date queue/exchange.
Imagine a cluster with primary A and backups B and C. A queue Q is created on A
and replicated to B, C. Now A dies and B takes over as primary. Before C can
connect to B, a client destroys Q and creates a new queue with the same name.
When B connects it sees Q and incorrectly assumes it is the same Q that it has
already replicated. Now C has an inconsistent replica of Q.
The fix is to tag queues/exchanges with a UUID so a backup can tell if a queue
is not the same as the one it has already replicated, even if the names are the
same. This all also applies to exchanges.
- Minor imrovements to printing UUIDs in a FieldTable.
- Fix comparison of void Variants, added operator !=
git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1409241 13f79535-47bb-0310-9956-ffa450edef68
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