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https://issues.apache.org/jira/browse/AMQ-6203?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15250691#comment-15250691
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Raghu Baddam commented on AMQ-6203:
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Thanks......our stores are always full because of this bug. we are using AMQ
5.13.0
> 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: 5.13.0, 5.13.1, 5.12.3, 5.13.2
> Reporter: Timothy Bish
> Assignee: Timothy Bish
> Fix For: 5.14.0, 5.13.3
>
>
> 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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