Timothy Bish created AMQ-6203:
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Summary: KahaDB: Allow rewrite of message acks in older logs which
prevent cleanup
Key: AMQ-6203
URL: https://issues.apache.org/jira/browse/AMQ-6203
Project: ActiveMQ
Issue Type: Improvement
Components: KahaDB
Affects Versions: 5.13.2, 5.12.3, 5.13.1, 5.13.0
Reporter: Timothy Bish
Assignee: Timothy Bish
Fix For: 5.14.0
There are cases where a chain of journal logs can grow due to acks for messages
in older logs needing to be kept so that on recovery proper state can be
restored and older messages not be resurrected.
In many cases just moving the acks from one log forward to a new log can free
an entire chain during subsequent GC cycles. The 'compacted' ack log can be
written during the time between GC cycles without the index lock being held
meaning normal broker operations can continue.
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