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https://issues.apache.org/jira/browse/OAK-4655?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stefan Egli updated OAK-4655:
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Attachment: OAK-4655.v1.patch
Attaching [^OAK-4655.v1.patch] which is a suggestion for a
{{SegmentNodeStoreFactory}} (one for both oak-segment and oak-segment-tar -
they're basically twins, perhaps we don't need both..) that registers
{{NodeStoreProviders}} with the corresponding {{role}} set (the role coming
from the config for {{SegmentNodeStoreFactory}}).
> Enable configuring multiple segment nodestore instances in same setup
> ---------------------------------------------------------------------
>
> Key: OAK-4655
> URL: https://issues.apache.org/jira/browse/OAK-4655
> Project: Jackrabbit Oak
> Issue Type: New Feature
> Components: segment-tar, segmentmk
> Reporter: Chetan Mehrotra
> Assignee: Stefan Egli
> Fix For: 1.6
>
> Attachments: OAK-4655.v1.patch
>
>
> With OAK-4369 and OAK-4490 its now possible to configure a new
> SegmentNodeStore to act as secondry nodestore (OAK-4180). Recently for few
> other features we see a requirement to configure a SegmentNodeStore just for
> storage purpose. For e.g.
> # OAK-4180 - Enables use of SegmentNodeStore as a secondary store to
> compliment DocumentNodeStore
> #* Always uses BlobStore from primary DocumentNodeStore
> #* Compaction to be enabled
> # OAK-4654 - Enable use of SegmentNodeStore for private mount in a
> multiplexing nodestore setup
> #* Might use its own blob store
> #* Compaction might be disabled as it would be read only
> # OAK-4581 - Proposes to make use of SegmentNodeStore for storing event queue
> offline
> In all these setups we need to configure a SegmentNodeStore which has
> following aspect
> # NodeStore instance is not directly exposed but exposed via
> {{NodeStoreProvider}} interface with {{role}} service property specifying the
> intended usage
> # NodeStore here is not fully functional i.e. it would not be configured with
> std observers, would not be used by ContentRepository etc
> # It needs to be ensured that any JMX MBean registered accounts for "role" so
> that there is no collision
> With existing SegmentNodeStoreService we can only configure 1 nodestore. To
> support above cases we need a OSGi config factory based implementation which
> enables creation of multiple SegmentNodeStore instances (each with different
> directory and different settings)
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