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From "Amit Jain (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (OAK-2252) make generic VersionGCSupport perform better
Date Mon, 02 Feb 2015 09:30:36 GMT

     [ https://issues.apache.org/jira/browse/OAK-2252?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Amit Jain updated OAK-2252:
---------------------------
    Fix Version/s:     (was: 1.0.10)
                   1.0.12

> make generic VersionGCSupport perform better
> --------------------------------------------
>
>                 Key: OAK-2252
>                 URL: https://issues.apache.org/jira/browse/OAK-2252
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: mongomk
>    Affects Versions: 1.1.1, 1.0.9
>            Reporter: Julian Reschke
>            Assignee: Julian Reschke
>            Priority: Minor
>             Fix For: 1.1.6, 1.0.12
>
>
> The DocumentMK's VersionGCSupport code currently special-cases the Mongo persistence.

> Needed are two optimized queries:
> 1) deletedOnce = true AND modifiedInSecs < lastModified
> 2) sdType in (....) AND sdMaxRevTimeInSecs < oldestRevTimeStamp
> (where in the case of 2) the matching documents can be removed right away)
> TODO:
> a) find out which of these system properties ought to be indexed properties
> b) decide on whether we can implement this as generic interface extension of DocumentStore,
or whether we add custom code for the RDBDocumentStore similary to what Mongo does
> on b): I think we should aim for *removing* persistence-specific code from the kernel,
so we probably should add extension interfaces for these.



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