RongtongJin opened a new issue, #9699: URL: https://github.com/apache/rocketmq/issues/9699
### Before Creating the Enhancement Request - [x] I have confirmed that this should be classified as an enhancement rather than a bug/feature. ### Summary Optimize shutdown process and resource management for graceful broker shutdown ### Motivation Currently, RocketMQ broker shutdown process has several issues that can lead to resource leaks and improper cleanup: - Incomplete shutdown sequence: Some components are not properly shut down in the correct order - Resource leaks: Services and threads may not be properly terminated during shutdown - State management issues: Components may attempt to perform operations after shutdown has begun ### Describe the Solution You'd Like I would like to implement a comprehensive solution that addresses the shutdown process issues across multiple RocketMQ components: 1. Enhanced BrokerController Shutdown Sequence Implement proper shutdown order for all broker services Add graceful termination for transactional message services Ensure proper cleanup of notification processors and offset managers Add shutdown handling for metrics and statistics services 2. Storage Layer Shutdown Improvements DefaultMessageStore: Implement comprehensive shutdown flow with proper state management CommitLog: Add proper resource cleanup during shutdown MappedFileQueue: Implement graceful shutdown handling StoreCheckpoint: Enhance checkpoint shutdown process DefaultHAService: Improve HA service shutdown sequence 3. Timer Component Shutdown Enhancements TimerMessageStore: Implement complete shutdown with proper resource cleanup TimerCheckpoint: Add graceful checkpoint shutdown TimerLog: Improve log shutdown handling TimerWheel: Implement proper wheel shutdown management 4. Processor Shutdown Improvements AckMessageProcessor: Add proper shutdown handling NotificationProcessor: Implement graceful shutdown process PopMessageProcessor: Improve shutdown sequence PopBufferMergeService: Add proper resource cleanup 5. Common Component Optimizations AbstractRocksDBStorage: Enhance RocksDB shutdown process StatisticsManager: Implement proper statistics cleanup ClientHousekeepingService: Add better client cleanup 6. Implementation Approach Add proper state checks before performing operations Implement try-catch blocks for shutdown operations to prevent cascading failures Ensure all services are properly terminated in the correct order Add null checks and defensive programming practices ### Describe Alternatives You've Considered No ### Additional Context No -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
