Hi (I'm the author of that ticket): >From my understanding limiting MaxDirectMemory won't workaround this memory leak. The leak is inside the JVM's implementation, not in normal direct buffers. On one of our brokers with this issue, we're seeing the JVM report 1.2GB of heap, and 128MB of offheap memory, yet the actual process memory is more like 10GB.
Thanks Tom Crayford Heroku Kafka
