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From "Thomas Mueller (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-80) Implement batched writing for KernelNodeStore
Date Wed, 02 May 2012 12:36:51 GMT

    [ https://issues.apache.org/jira/browse/OAK-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13266510#comment-13266510
] 

Thomas Mueller commented on OAK-80:
-----------------------------------

If we want to support an efficient remoting between the oak-jcr (the 'upper bun') and oak-core
(the 'patty'), then I guess it makes sense to keep the transient space within oak-jcr, at
least for changes that fit in memory. That means oak-mk (the 'lower bun') wouldn't be involved
for such changes, until session.save(). And session.save() would (in the best case) only result
in one call to oak-core.

Unless if the 'upper bun' includes its own MicroKernel implementation for the transient space.
                
> Implement batched writing for KernelNodeStore
> ---------------------------------------------
>
>                 Key: OAK-80
>                 URL: https://issues.apache.org/jira/browse/OAK-80
>             Project: Jackrabbit Oak
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 0.1
>            Reporter: Michael Dürig
>            Assignee: Michael Dürig
>
> Currently KernelNodeStore and KernelNodeStateBuilder directly apply every operation on
the content tree to the private branch of the Microkernel. There have been some concerns re.
performance hits due to network latency in the case where the Microkernel is not co-located.

> I suggest to add batching capabilities such that operations are only written through
to the Microkernel on certain limits. 

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