Chetan Mehrotra created OAK-4655:
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Summary: Enable configuring multiple segment nodestore in same
setup
Key: OAK-4655
URL: https://issues.apache.org/jira/browse/OAK-4655
Project: Jackrabbit Oak
Issue Type: Improvement
Components: segment-tar, segmentmk
Reporter: Chetan Mehrotra
Fix For: 1.6
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
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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