EHC ❯ Unnecessary locking in BlockingCache causes deadlock due to lock upgrade when attempting inline removal of expired Elements

• Type: Bug
• Status: Closed
• Priority: 2 Major
• Resolution: Fixed
• Component/s: ehcache-core
• Labels:

• Assignee: hsingh
• Reporter: cdennis
• Created: May 11, 2010
• Votes: 0
• Watchers: 0
• Updated:

  January 17, 2013
• Resolved:

  May 11, 2010

Description

When attempting to remove an expired element during a get, we try to take the write lock. BlockingCache was being greedy and holding a read lock over the whole cache.get which leads to expiry removals being lock upgrades which deadlock.

Comments

Himadri Singh 2010-05-12

BlockingCacheTest.testNoDeadlockOnRemovingExpiredElement() passes.