[OAK-6675] Implement CompositeNodeStoreStatsMBean

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.7.8, 1.8.0
• Component/s: composite
• Assignee: Unassigned
• Reporter: Tomek Rękawek
• Created: 15/Sep/17 09:57
• Updated: 29/Sep/17 10:09
• Resolved: 19/Sep/17 10:03

Description

Following stats can be exposed:

• what's the size of the org.apache.jackrabbit.oak.composite.StringCache for paths
• what's the min/max/avg path depth for the CompositeNodeBuilder/State
• what are the most popular paths for CompositeNodeBuilder/State
• how often does the CompositeNodeBuilder/State switches to the native Builder/State (grouped per mount)

Issue Links

• is duplicated by: OAK-6682 Build Jackrabbit Oak #760 failed
• is related to: OAK-6582 Review MBean interactions in a composite setup