[AMQ-2366] File leak in KahaDB file lock - slave exhausts OS fd limit

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.3.0
• Fix Version/s: 5.3.0
• Component/s: Message Store
• Assignee: Gary Tully
• Reporter: Gary Tully
• Created: 26/Aug/09 15:19
• Updated: 26/Aug/09 15:21
• Resolved: 26/Aug/09 15:19

Description

If I follow the logs, the slave brokers emit this message for a while:

Database /opt/fusemq/data/dev-broker1/kahadb/lock is locked... waiting 10 seconds for the database to be unlocked. Reason: java.io.IOException: File '/opt/fusemq/data/dev-broker1/kahadb/lock' could
not be locked.

Then, it switches to

Database /opt/fusemq/data/dev-broker1/kahadb/lock is locked... waiting 10 seconds for the database to be unlocked. Reason: java.io.FileNotFoundException: /opt/fusemq/data/dev-broker1/kahadb/lock (Too many open files)

lsof shows loads of fds allocated to the slave broker.