QPID-5855 - Simplified HA transaction logic.

Removed complex and incorrect HA+TX logic, reverted to the following limitation:

You can use transactions in a HA cluster, but there are limitations on the
transactional guarantees. Transactions function normally with the *primary*
broker but replication to the backups is not coverted by the atomic guarantee.

The following situations are all safe:
- Client rolls back a transaction.
- Client successfully commits a transaction.
- Primary fails during a transaction *before* the client sends a commit.
- Transaction contains only one message.

The problem case is when all of the following occur:
- transaction contains multiple actions (enqueues or dequeues)
- primary fails between client sending commit and receiving commit-complete.

In this case it is possible that only part of the transaction was replicated to
the backups, so on fail-over partial transaction results may be visible.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1701109 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 2 insertions, 0 deletions

diff --git a/qpid/cpp/src/tests/ha_test.py b/qpid/cpp/src/tests/ha_test.py
index 82ca808cb1..ace225a509 100755
--- a/qpid/cpp/src/tests/ha_test.py
+++ b/qpid/cpp/src/tests/ha_test.py
@@ -267,6 +267,8 @@ acl allow all all
         c = self.connect_admin()
         try:
             wait_address(c, queue)
+            if not "msg" in kwargs:
+                kwargs["msg"]=str(self)
             assert_browse_retry(c.session(), queue, expected, **kwargs)
         finally: c.close()