delta/python-packages/qpid-python.git/cpp/src/qpid/ha/Event.cpp, branch QPID-6125-ProtocolRefactoring git.apache.org: qpid.git QPID-5275: HA transactions failing in qpid-cluster-benchmark 2013-11-12T16:58:52+00:00 Alan Conway aconway@apache.org 2013-11-12T16:58:52+00:00 f87a61f06c3aa3d866cd3cc2fccf003276f6949a The test was failing due to incorrect handling of the transaction lifecycle: - Failing to handle the automatic rollback of the empty TX at session close. - Deleting the tx-q before all backups were finished with it. The fixes include - Make tx-q auto-delete, deleted only when the TxReplicators cancel their subscriptions. - Use markInUse/releaseFromUse on the primary to keep the tx-q until the primary is done. - Count TxReplicators for auto-delete (unlike normal QueueReplicators) - Improved error handling and log messages - Handle *incoming* exceptions on a federation link by passing to ErrorListener - QueueReplicator catches incoming not-found and resource-deleted exceptions - close the backup bridge, handle race between subscribe and delete. - Simplify QueueSnapshots, remove need for snapshot map. git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1541146 13f79535-47bb-0310-9956-ffa450edef68 
The test was failing due to incorrect handling of the transaction lifecycle:
- Failing to handle the automatic rollback of the empty TX at session close.
- Deleting the tx-q before all backups were finished with it.

The fixes include
- Make tx-q auto-delete, deleted only when the TxReplicators cancel their subscriptions.
- Use markInUse/releaseFromUse on the primary to keep the tx-q until the primary is done.
- Count TxReplicators for auto-delete (unlike normal QueueReplicators)
- Improved error handling and log messages
- Handle *incoming* exceptions on a federation link by passing to ErrorListener
- QueueReplicator catches incoming not-found and resource-deleted exceptions
  - close the backup bridge, handle race between subscribe and delete.
- Simplify QueueSnapshots, remove need for snapshot map.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1541146 13f79535-47bb-0310-9956-ffa450edef68
QPID-4327: HA Handle brokers joining and leaving during a transaction. 2013-08-05T19:33:35+00:00 Alan Conway aconway@apache.org 2013-08-05T19:33:35+00:00 66084bcbe57e598b857edcfab669849b9c7ebc9d During a transaction: - A broker leaving aborts the transaction. - A broker joining does not participate in the transaction - but does receive the results of the TX via normal replication. Clean up tx-queues when the transaction completes. git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1510678 13f79535-47bb-0310-9956-ffa450edef68 
During a transaction:
- A broker leaving aborts the transaction.
- A broker joining does not participate in the transaction
  - but does receive the results of the TX via normal replication.

Clean up tx-queues when the transaction completes.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1510678 13f79535-47bb-0310-9956-ffa450edef68
QPID-4327: HA TX transactions, blocking wait for prepare 2013-08-01T20:27:39+00:00 Alan Conway aconway@apache.org 2013-08-01T20:27:39+00:00 112503593af21b7b06522195404c68fd4e5d4861 Backups send prepare messages to primary, primary delays completion of prepare till all are prepared (or there is a failure). This is NOT the production solution - blocking could cause a deadlock. We need to introduce asynchronous completion of prepare without blocking. This interim solution allows testing on other aspects of TX support. git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1509424 13f79535-47bb-0310-9956-ffa450edef68 
Backups send prepare messages to primary, primary delays completion of prepare
till all are prepared (or there is a failure).

This is NOT the production solution - blocking could cause a deadlock. We need
to introduce asynchronous completion of prepare without blocking. This
interim solution allows testing on other aspects of TX support.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1509424 13f79535-47bb-0310-9956-ffa450edef68
QPID-4327: HA TX transactions: basic replication. 2013-08-01T20:27:26+00:00 Alan Conway aconway@apache.org 2013-08-01T20:27:26+00:00 e6598e9f95d55b80f96dbcb1e12bc1fc38c66af1 On primary a PrimaryTxObserver observes a transaction's TxBuffer and generates transaction events on a tx-replication-queue. On the backup a TxReplicator receives the events and constructs a TxBuffer equivalent to the one in the primary. Unfinished: - Primary does not wait for backups to prepare() before committing. - All connected backups are assumed to be in the transaction, there are race conditions around brokers joining/leavinv where this assumption is invalid. - Need more tests. git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1509423 13f79535-47bb-0310-9956-ffa450edef68 
On primary a PrimaryTxObserver observes a transaction's TxBuffer and generates
transaction events on a tx-replication-queue. On the backup a TxReplicator
receives the events and constructs a TxBuffer equivalent to the one in the
primary.

Unfinished:
- Primary does not wait for backups to prepare() before committing.
- All connected backups are assumed to be in the transaction, there are race
  conditions around brokers joining/leavinv where this assumption is invalid.
- Need more tests.

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1509423 13f79535-47bb-0310-9956-ffa450edef68