[OAK-4623] Log more information when null DocumentNodeState is read for a child while fetching children

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.0.34, 1.2.19, 1.4.7, 1.5.9, 1.6.0
• Component/s: documentmk
• Assignee: Vikas Saurabh
• Reporter: Vikas Saurabh
• Created: 31/Jul/16 16:51
• Updated: 15/Jun/17 07:44
• Resolved: 22/Aug/16 08:52

Description

DocumentNodeStore#getChildNodes validates node states of children in the returned iterator and throws exception if a child is read as null.

This is clearly an unexpected case (although, it has been observed in running systems). The more probable cause for such a scenario would be to have inconsistent value in nodeChildrenCache. It'd be useful to log more information about cache state to help investigating such cases.

Issue Links

• is related to: OAK-6351 Invalidate cache entries when getChildNodes() is aborted