[AMQ-4694] add support for flock-based shared lock file (patch included)

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Abandoned
• Affects Version/s: 5.8.0
• Component/s: Broker
• Patch Info: Patch Available
• Assignee: Unassigned
• Reporter: Carl Harris
• Created: 27/Aug/13 14:21
• Updated: 13/Mar/22 14:08
• Resolved: 13/Mar/22 14:08

Description

This issue provides a patch to add support for using native flock (2) based lock files. As discussed in AMQ-4378, using the Shared File System Master/Slave configuration on an OCFS2 filesystem is complicated by Java's use of POSIX locks. See the attached README for motivation and description of the approach.

With this patch, a user can configure KahaDB to use a shared native lock file (using flock) as follows:

<persistenceAdapter>
  <kahaDB ...>
    <locker>
       <shared-native-file-locker/>
    </locker>
  </kahaDB>
</persistenceAdapter>