[CASSANDRA-7244] Don't allocate a Codec.Flag enum value array on every read

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 2.0.9
• Labels: performance
• Assignee: Benedict Elliott Smith
• Reporter: Benedict Elliott Smith

Authors

Benedict Elliott Smith

Reviewers

David Brosius

• Created: 16/May/14 00:44
• Updated: 16/Apr/19 09:31
• Resolved: 17/May/14 16:51

Description

In QueryOptions.Codec.Flag.deserialize() we call Flag.values(), which constructs a copy of the Enum array each time. Since we only use this lookup the enums, and since it happens often, this is pretty wasteful. It seems to make a slight (barely perceptible) difference to throughput, but worth fixing either way.