jackrabbit-oak-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Thomas Mueller (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (OAK-120) MicroKernel API: specific retention policy of binaries
Date Thu, 31 May 2012 14:36:22 GMT

     [ https://issues.apache.org/jira/browse/OAK-120?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Thomas Mueller resolved OAK-120.

    Resolution: Fixed

Patch applied in revision 1344746
> MicroKernel API: specific retention policy of binaries
> ------------------------------------------------------
>                 Key: OAK-120
>                 URL: https://issues.apache.org/jira/browse/OAK-120
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: mk
>            Reporter: Thomas Mueller
>         Attachments: OAK-120.patch
> A MicroKernel implementation needs to remove unused binaries. As the API doesn't have
a way to manually remove binaries (see also OAK-117), we need to specify a retention policy
(the rules for which binaries can be removed and which ones need to be retained). The idea
is that a MicroKernel implementation uses a garbage collection algorithm to remove unused
binaries from time to time.
> There are two classes of binaries that need to be retained: 
> (A) binaries referenced within the nodes (as property values)
> (B) temporary binaries (not [yet] referenced)
> For (B) we could use the same retention policy as for revisions (keep temporary binaries
as long as old revisions are kept). 
> For (A) we need to specify the property value format, so the MicroKernel can retain binaries
based on the content. One idea is that binary values should be kept if there is a node with
property value ":blobId:<blobId>", or a node with an array property value [..., ":blobId:<blobId>",...].
> I will create a patch.

This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira


View raw message