[CASSANDRA-9909] Configuration is loaded too often during runtime

• Type: Improvement
• Status: Open
• Priority: Low
• Resolution: Unresolved
• Component/s: Local/Config
• Assignee: Unassigned
• Reporter: Robert Stupp
• Created: 28/Jul/15 11:57
• Updated: 16/Apr/19 09:31

Description

Each call to SimpleSeedProvider.getSeeds() via DatabaseDescriptor.getSeeds() loads the configuration file from disk.

This is unnecessary in the vast majority of calls from Gossiper and StorageService.

Proposal:

• Instantiate ConfigurationLoader once during init of DD (not every time in loadConfig()}
• Only load configuration once per time interval
• Only load configuration if config file has changed (file modification timestamp) - if applicable (URL resolves to a file)

Issue Links

• is related to: CASSANDRA-7597 Remove static initializer in DatabaseDescriptor
• relates to: CASSANDRA-7663 Removing a seed causes previously removed seeds to reappear