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From "Konrad Windszus (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (JCRVLT-18) Set default autosave threshold based on repository implementation
Date Fri, 18 Oct 2013 13:07:42 GMT

    [ https://issues.apache.org/jira/browse/JCRVLT-18?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13799075#comment-13799075
] 

Konrad Windszus commented on JCRVLT-18:
---------------------------------------

That is still a problem for the default mode ImportMode.REPLACE (https://svn.apache.org/repos/asf/jackrabbit/commons/filevault/trunk/vault-core/src/main/java/org/apache/jackrabbit/vault/fs/api/FilterSet.java)
if a node gets replaced which is having a lot of subnodes. The delete operation will basically
block for a long time in Jackrabbit 2 because the autosave threshold is ignored for the delete
operation. What would be better is probably: Traverse through the old content and save after
deleting 1000 leaf nodes.

> Set default autosave threshold based on repository implementation
> -----------------------------------------------------------------
>
>                 Key: JCRVLT-18
>                 URL: https://issues.apache.org/jira/browse/JCRVLT-18
>             Project: Jackrabbit FileVault
>          Issue Type: Improvement
>            Reporter: Tobias Bocanegra
>            Priority: Minor
>
> with jackrabbit 2.0 we had a limitation of the size of the transient space as it is held
in memory. in order to support large packages, the AutoSave threshold is set to 1024 nodes.
> with jackrabbit 3.0 the transient space is more or less unlimited in size, and we can
install large packages in 1 save, which improves installation atomicity.
> however, the bigger the transient size, the higher the chance for collisions during installation
of large packages, so saving in chunks yields to a more robust installation behavior.
> suggestions:
> - autosave threshold of 0 should mean 'auto'
> - autosave threshold of -1 should mean 'never'
> - packages can provide their desired autosave threshold via properties



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