Tomek Rękawek commented on OAK-4655:

[~chetanm], thanks for the suggestions. I applied all of them in 

What about the SegmentNodeStoreService? Do you think we should make it 
consistent (as in OAK-4834) or once we have the factory we don't need the 
NodeStoreProvider capabilities in the "main" service?

> 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: Tomek Rękawek
>             Fix For: 1.6, 1.5.11
>         Attachments: OAK-4655.v1.patch, OAK-4655.v2.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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