[OAK-3140] DataStore / BlobStore: add a method to pass a "type" when writing

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: blob
• Labels: performance
• Epic Link: Multi blob store support
• Assignee: Thomas Mueller
• Reporter: Thomas Mueller
• Created: 23/Jul/15 13:02
• Updated: 08/Oct/19 15:22

Description

Currently, the BlobStore interface has a method "String writeBlob(InputStream in)". This issue is about adding a new method "String writeBlob(String type, InputStream in)", for the following reasons (in no particular order):

• Store some binaries (for example Lucene index files) in a different place, in order to safely and quickly run garbage collection just on those files.

• Store some binaries in a slow, some in a fast storage or location.

• Disable calculating the content hash (de-duplication) for some binaries.

• Store some binaries in a shared storage (for fast cross-repository copying), and some in local storage.

Issue Links

• Blocked: OAK-4492 FileDataStore with configurable path based structure
• is related to: OAK-3402 Multiplexing NodeStore support in Oak layer
• relates to: OAK-2808 Active deletion of 'deleted' Lucene index files from DataStore without relying on full scale Blob GC
• relates to: OAK-4200 [BlobGC] Improve collection times of blobs available