EHC ❯ JTA deadlock

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

• Assignee: nrana
• Reporter: alexsnaps
• Created: March 10, 2010
• Votes: 0
• Watchers: 0
• Updated:

  April 13, 2010
• Resolved:

  March 22, 2010

Description

When a transaction is being prepared, while another one is commiting, that have at least 2 keys in common being accessed in “non-natural order of the locks” you end up with a deadlock. EhcacheXAResourceImpl#prepareCommand is simply iterating over the queued commands to lock on the oldVersionStore, while commit does (the proper!) getAndWriteLockAllSyncForKeys() call. That current situation creates the deadlock

Comments

Fiona OShea 2010-03-10

Targeting to Ehcache 2.0.1 (dot release to 2.0.0)

Nitin Rana 2010-04-13

System test “TwoResourceBTMXATest “(ehcache-terracotta-system-tests) is passing now.