[OAK-2929] Parent of unseen children must not be removable

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.0.13, 1.2
• Fix Version/s: 1.0.22, 1.2.7, 1.3.8, 1.4
• Component/s: core, mongomk
• Labels: concurrency technical_debt
• Epic Link: DocumentMK resilience
• Assignee: Marcel Reutegger
• Reporter: Vikas Saurabh
• Created: 29/May/15 04:59
• Updated: 02/Mar/16 14:29
• Resolved: 29/Sep/15 14:59

Description

With OAK-2673, it's now possible to have hidden intermediate nodes created concurrently.
So, a scenario like:

start -> /:hidden
N1 creates /:hiddent/parent/node1
N2 creates /:hidden/parent/node2

is allowed.

But, if N2's creation of parent got persisted later than that on N1, then N2 is currently able to delete parent even though there's node1.

Issue Links

• is related to: OAK-2673 Resolve add-add, delete-delete merge conflict for empty hidden docs
• is related to: OAK-3411 Inconsistent read on DocumentNodeStore startup
• is related to: OAK-3733 Sometimes hierarchy conflict between concurrent add/delete isn't detected