[OAK-7722] Support collectBlobReferences in ReadOnlyFileStore

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.10.0, 1.9.9
• Component/s: segment-tar
• Assignee: Amit Jain
• Reporter: Amit Jain
• Created: 30/Aug/18 10:18
• Updated: 12/Oct/18 13:30
• Resolved: 12/Sep/18 08:33

Description

Currently, to collect all external blob references for the Mark phase of DSGC, we need to open the segment store in a read-write mode i.e. use FileStore instead of a ReadOnlyFileStore. The task is to implement the collectBlobReferences method in the ReadOnlyFileStore.

The references being returned might be somewhat stale in this case but by not much.