[CASSANDRA-19758] Accord: CommandsForKey should self-prune - ASF JIRA

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Details

Type: Improvement
Status: Resolved
Priority: Normal
Resolution: Fixed
Fix Version/s: None
Component/s: Accord
Labels:
- pull-request-available

Epic Link:
CEP-15: General Purpose Transactions
Platform:

All
Impacts:

None

Description

CommandsForKey should periodically self-prune, so as to continue functioning well in-between garbage collections. This is a bit complicated, as once we prune we are left with potentially incomplete information, and have to sometimes load per-command information from disk. But the payoff is ensuring CommandsForKey objects - which drive the majority of the state machine - are kept to a reasonable size.