gaozhangmin opened a new issue #13170: URL: https://github.com/apache/pulsar/issues/13170
## Motivation MaxMessagePublishBufferSizeInMB is used to limit the direct memory usage for reading messages from producers, default value is 1/2 of direct memory. The problem is: If we enable any Protocol Handler in broker such as KoP, the direct memory to buffer the pending messages from Kafka producers is not limited by maxMessagePublishBufferSizeInMB. And if we have Pulsar producers and Kafka producers sending message together with higher throughput than BookKeeper IO, broker OOM will happen. ## Goal When handling producer message, we could check if pending bytes from pulsar and protocol handler exceed maxMessagePublishBufferSizeInMB, if yes, stop reading from producer both in broker and Protocol Handler side. ## API Changes using a LongAdder in `BrokerService` to record the current pending bytes for entire broker ## Implementation To make effective use of memory, using a LongAdder in `BrokerService` to record the current pending bytes for entire broker, include both pulsar pending messages and Protocol Handler's pending messages. ## Reject Alternatives No alternatives yet. -- 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]
