[CASSANDRA-4998] Add hook for modifying configuration after cassandra.yaml is loaded

• Type: New Feature
• Status: Resolved
• Priority: Low
• Resolution: Won't Fix
• Assignee: Unassigned
• Reporter: Michael Guymon

Reviewers

Sylvain Lebresne

• Created: 27/Nov/12 18:38
• Updated: 16/Apr/19 09:32
• Resolved: 04/Jan/13 11:09

Description

When embedding Cassandra in an application, allow programmatic changes to Cassandra's config by using a hook to modify the configuration after the YAML is loaded.

For this to work, a new YAML configuration needs to be added: after_load_hook_class. If defined, it would be the FQN of a class that implements IAfterLoadHook. When DatabaseDescriptor calls loadYAML(), before any processing of the Config happens, the after_load_hook_class is checked and called if exists. Then processing of the config happens as normal.