lhotari edited a comment on issue #10136: URL: https://github.com/apache/pulsar/issues/10136#issuecomment-829159713
For direct memory leaks, it's most likely about Netty pooled memory. For debugging the situation, it might be useful to check if there are log messages from the Netty leak detector. It turns out that the [default setting for Netty leak detection for Pulsar broker is 'Disabled'](https://github.com/apache/pulsar/blob/8ea4a39dc8bf6f2f23a160688bb70a80f6acfd4d/pulsar-common/src/main/java/org/apache/pulsar/common/allocator/PulsarByteBufAllocator.java#L60-L61). Please set `-Dpulsar.allocator.leak_detection=Simple` in `PULSAR_EXTRA_OPTS` environment variable to enable the simple detection. After Netty leaks would get reported to the log with this type of of log messages: https://github.com/netty/netty/blob/4.1/common/src/main/java/io/netty/util/ResourceLeakDetector.java#L318-L336 The possible leak detection log entries can be found by grepping the logs for "LEAK: ". -- 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. For queries about this service, please contact Infrastructure at: [email protected]
