Pavel Moravec created QPID-5531:
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Summary: [C++ broker] Set timeout for every DTX transaction
Key: QPID-5531
URL: https://issues.apache.org/jira/browse/QPID-5531
Project: Qpid
Issue Type: Bug
Components: C++ Broker
Affects Versions: 0.24
Reporter: Pavel Moravec
Assignee: Pavel Moravec
Priority: Minor
Description of problem:
If an external Transaction Manager (TM) prepares a DTX transaction but forgets,
due to any reason, to commit or abort it, tpl journal has an orphaned enqueue
record forever (that in legacystore causes enqueue capacity threshold exception
after a while, preventing _any_ transaction to commit/abort).
To prevent such orphaned XID entries in tpl, every incoming DTX transaction
should have a default timeout set (while dtx.set-timeout AMQP 0-10 primitive
changes it).
The timeout should be broker-wide parameter configurable via
--dtx-default-timeout option.
Version-Release number of selected component (if applicable):
any (incl upstream 0.26)
How reproducible:
100%
Steps to Reproduce:
1. Mimic an external TM that prepares a DTX but never commits or aborts it -
use e.g. _modified_ qpid-txtest (patch attached):
qpid-txtest --queues=1 --total-messages=1 --dtx=1 --dtx-commit=no
2. /usr/libexec/qpid/store_chk /var/lib/qpidd/rhm/tpl -b tpl
Actual results:
tpl journal keeps the unfinished transaction forever
Expected results:
sleeping for dtx-default-timeout, the transaction should be gone
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