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From "Jukka Zitting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-1657) Cluster revision entries should be retrieved in order
Date Fri, 20 Jun 2008 10:41:45 GMT

    [ https://issues.apache.org/jira/browse/JCR-1657?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12606698#action_12606698
] 

Jukka Zitting commented on JCR-1657:
------------------------------------

Looks good to me.

> Cluster revision entries should be retrieved in order
> -----------------------------------------------------
>
>                 Key: JCR-1657
>                 URL: https://issues.apache.org/jira/browse/JCR-1657
>             Project: Jackrabbit
>          Issue Type: Bug
>          Components: jackrabbit-core
>    Affects Versions: 1.3.3
>         Environment: Clustered
>            Reporter: Martijn Hendriks
>            Assignee: Martijn Hendriks
>         Attachments: JCR-1657.patch
>
>
> The selectRevisionStmtSQL (DatabaseJournal#buildSqlStatements) returns a result set which
may not be ordered by REVISION_ID. This has the effect that cluster instances that want to
synchronize to the latest revision do not update their local revision appropriately since
they assume that the revision result set is ordered (see code in AbstractJournal#doSync).
This might cause a lot of unnecessary CPU cycles on these machines with degraded performance
as a result. Furthermore, it causes functional issues as well as events may be fired multiple
times and in the wrong order.

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