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Posted to issues@activemq.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2018/10/23 15:02:00 UTC
[jira] [Commented] (AMQ-7084) Kahadb pagefile, allocated and unused
pages from read only transactions are leaked
[ https://issues.apache.org/jira/browse/AMQ-7084?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16660783#comment-16660783 ]
ASF subversion and git services commented on AMQ-7084:
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Commit 8a1abd9bb2744de70af11053f1755116c40ec55f in activemq's branch refs/heads/master from gtully
[ https://git-wip-us.apache.org/repos/asf?p=activemq.git;h=8a1abd9 ]
AMQ-7084 - ensure allocated and unused free pages are visible to subsequent transactions, fix and test with test updates to reflect proper usage
> Kahadb pagefile, allocated and unused pages from read only transactions are leaked
> ----------------------------------------------------------------------------------
>
> Key: AMQ-7084
> URL: https://issues.apache.org/jira/browse/AMQ-7084
> Project: ActiveMQ
> Issue Type: Bug
> Components: KahaDB
> Affects Versions: 5.15.0
> Reporter: Gary Tully
> Assignee: Gary Tully
> Priority: Major
> Fix For: 5.16.0
>
>
> The work in AMQ-7080 to checkpoint the free list has identified a case where the free list is not updated to reflect the disk state of an allocated free page. This can lead to a free page leak in error. In practice this pattern of usage is not widely used, but it is relevant when the free page list is being tracked and failure can be arbitrary. It is important that an accurate reflection of the current state is being checkpointed.
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