Matt Ryan created OAK-7083:
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Summary: CompositeDataStore - ReadOnly/ReadWrite Delegate Support
Key: OAK-7083
URL: https://issues.apache.org/jira/browse/OAK-7083
Project: Jackrabbit Oak
Issue Type: New Feature
Components: blob, blob-cloud, blob-cloud-azure, blob-plugins
Reporter: Matt Ryan
Assignee: Matt Ryan
Support a specific composite data store use case, which is the following:
* One instance uses no composite data store, but instead is using a single
standard Oak data store (e.g. FileDataStore)
* Another instance is created by snapshotting the first instance node store,
and then uses a composite data store to refer to the first instance's data
store read-only, and refers to a second data store as a writable data store
One way this can be used is in creating a test or staging instance from a
production instance. At creation, the test instance will look like production,
but any changes made to the test instance do not affect production. The test
instance can be quickly created from production by cloning only the node store,
and not requiring a copy of all the data in the data store.
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