[OAK-2403] Improve monitoring capabilities for TarMk revision gc

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Segment Tar 0.0.2, 1.6.0
• Component/s: segment-tar
• Labels: gc monitoring tooling
• Epic Link: SegmentMK revision GC
• Assignee: Michael Dürig
• Reporter: Michael Dürig
• Created: 15/Jan/15 14:59
• Updated: 27/Jun/16 08:22
• Resolved: 07/Jun/16 15:55

Description

Container devoted to improving monitoring of the TarMk revision garbage collection process. The overall goal is to make it more transparent what revision gc does, how it performs, why it failed etc.

Issue Links

• is related to: OAK-3693 Expose the internal state of the repository through indicators and checks
• relates to: OAK-4274 Memory-mapped files can't be explicitly unmapped

Sub-Tasks

• Provide more information in SegmentNotFoundException: Closed
• Monitoring to track old NodeStates: Closed
• Implement MBean monitoring garbage collection: Closed
• SessionMBean should provide information about pending refresh: Closed
• SessionMBean should provide information about pending refresh: Closed
• Compactor should log revisions acting upon: Closed
• Log ids of segments being released for gc because of their age.: Closed