Page History

...

The MetadataLoader is a critical component in KRaft clusters that processes metadata changes from the Raft layer and distributes them to various publishers (brokers, controllers, etc.). However, unlike similar event-driven components such as the QuorumController (which has ControllerEventManager::AvgIdleRatio) and various coordinators, the MetadataLoader lacks the idle thread ratio metric for monitoring its event queue processing efficiency. This lack of visibility makes it challenging to assess the metadata processing pipeline's performance, detect potential bottlenecks in metadata propagation, or optimize resource allocation when metadata update frequency varies significantly.

...