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From "Stefan Guggisberg (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OAK-80) Implement batched writing for KernelNodeStore
Date Wed, 02 May 2012 13:06:52 GMT

    [ https://issues.apache.org/jira/browse/OAK-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13266538#comment-13266538
] 

Stefan Guggisberg commented on OAK-80:
--------------------------------------

FWIW:

> Personally I'd rather see such batching happening under the MicroKernel API where the
implementation actually knows about things like whether network roundtrips are involved and
what kind of batch sizes are most useful.

i imagine that the implementation in the MK would be quite complicated (due to the MVCC contract)
whereas supporting batched writes in the upper layer is probably not that difficult. 


                
> 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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