client can reject/release up to the first <total number of messages received on
the session> sent by the broker following the first rollback after failover
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Key: QPID-3546
URL: https://issues.apache.org/jira/browse/QPID-3546
Project: Qpid
Issue Type: Bug
Components: Java Client
Affects Versions: 0.12, 0.11, 0.10, 0.9, 0.8, 0.7, 0.6
Reporter: Robbie Gemmell
Priority: Critical
Fix For: 0.13
The Java client can reject/release up to the first <total number of messages
received on the session> sent by the broker following the first rollback after
failover.
When failover occurs, the rollback mark is set to -1 however the
highestDeliveryTag is not cleared, and so upon the first rollback performed
after failover this will set the rollback mark to <highestDeliveryTag>, which
is either the number of messages received by the Session (0-8/0-9/0-9-1) or
anything up to that value (0-10, where the message delivery tags are the
per-connection command IDs associated with each MessageTransfer, and all other
commands). This makes the client reject/release all incoming messages until the
deliveryTag passes the rollback mark and the messages are allowed through the
Dispatcher.
This could cause significant delays in message processing after failover, and
may result in messages arriving out of order because earlier rejects/release
get processed by the broker and cause it to re-dispatch earlier messages on the
queue within the ongoing flow of later messages just being sent for the first
time.
The deliveryTag marker should also be reset during the failover cleanup process.
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