Troubleshooting

Troubleshooting

1. On linux, the subscriber sample throws an exception

    java.lang.InternalError(a fault occurred in a recent unsafe memory access operation in compiled Java code)
   

   This is actually an out of disk space issue.

   To alleviate, check to make sure you have enough disk space.

   In the samples, on Linux, this will probably be either at /dev/shm/aeron or /tmp/aeron (depending on your settings).

   See this thread for a similar problem.

   Note: if you are trying to run this inside a Linux Docker, be aware that, by default, Docker only allocates 64 MB to the shared memory space at /dev/shm. However, the samples will quickly outgrow this.

   You can work around this issue by using the --shm-size argument for docker run or shm_size in docker-compose.yaml.