[OAK-4654] Allow to mount the secondary node store as a read-only subtree

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Fix Version/s: 1.6.0
• Component/s: documentmk
• Labels: secondary-nodestore
• Assignee: Tomek Rękawek
• Reporter: Tomek Rękawek
• Created: 08/Aug/16 12:24
• Updated: 19/May/17 04:02
• Resolved: 30/Sep/16 13:51

Description

For the document node store it should be possible to mount "another" node store under some path. Assumptions for the OSGi setup:

• the mounted node store provider has to be registered with (role=secondary) in OSGi,
• the MountInfoProvider contains a Mount registered as private,
• all reads of the paths configured in MountInfoProvider are redirected to the mounted node store,
• mounted subtrees are read-only,
• the properties characteristic to the document node store (lastRev, rootRev) are set to a constant value.

Issue Links

• is related to: OAK-4626 Use oak-upgrade to initialize the DocumentMK local cache nodestore
• is related to: OAK-4655 Enable configuring multiple segment nodestore instances in same setup
• relates to: OAK-4180 Use another NodeStore as a local cache for a remote Document store