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https://issues.apache.org/jira/browse/OAK-1356?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14305284#comment-14305284
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Marcel Reutegger commented on OAK-1356:
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Large transaction work better now, but the problems mentioned by Thomas are
still the same. We still have multiple passes over the change set, which will
result in a lot of repeated uncached calls. Even if it is technically possible
to have large transactions, I wouldn't recommend them for performance reasons.
> Expose the preferred transient space size as repository descriptor
> -------------------------------------------------------------------
>
> Key: OAK-1356
> URL: https://issues.apache.org/jira/browse/OAK-1356
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: core, jcr
> Reporter: Tobias Bocanegra
> Assignee: Chetan Mehrotra
> Labels: api
> Fix For: 1.2
>
>
> The problem is that the different stores have different transient space
> characteristics. for example the MongoMK is very slow when handling large
> saves.
> suggest to expose a repository descriptor that can be used to estimate the
> preferred transient space, for example when importing content.
> so either a boolean like:
> {{option.infinite.transientspace}}
> or a number like:
> {{option.transientspace.preferred.size}}
> the later would denote the average number of modified node states that should
> be put in the transient space before the persistence starts to degrade.
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