[GEODE-8790] Evicted entries sometimes remain in region map

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.1.0, 1.14.0
• Fix Version/s: 1.14.0
• Component/s: eviction
• Labels: pull-request-available
• Assignee: Louis R. Jacome
• Reporter: Louis R. Jacome
• Created: 14/Dec/20 23:19
• Updated: 03/Sep/21 02:20
• Resolved: 12/Jan/21 16:37

Description

Sometimes an entry set for eviction will remain in the region map after falling into an unhandled case in RegionMapDestroy.retryRemoveWithTombstone.

When testing the LRU capacity of a region, we create many entries beyond the LRU capacity, causing evictions. We sometimes run into a case where two threads compete to remove the same entry. One thread succeeds and removes it from the region map, while the other thread, in removal progress, will create a temporary entry in the map that does not get properly removed/handled.

Issue Links

• links to: GitHub Pull Request #5842
• links to: GitHub Pull Request #5851