[CASSANDRA-2490] DatabaseDescriptor.defsVersion should be volatile

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 0.7.5
• Severity: Low
• Assignee: Jeffrey Wang
• Reporter: Jeffrey Wang

Authors

Jeffrey Wang

Reviewers

Jonathan Ellis

• Created: 16/Apr/11 04:57
• Updated: 16/Apr/19 09:33
• Resolved: 16/Apr/11 16:15

Description

(Probably affects other versions, but I am on 0.7.3).

DatabaseDescriptor.defsVersion should be protected by volatile since it is written to and read by multiple threads from unsynchronized methods. This can manifest itself in schema agreement never occurring due to a node broadcasting the wrong schema version.