ERR_MISC_EOPENF: Too many open files

DSS and its subprocesses hold more open file descriptors than the limit configured for this system/process/user.

Remediation

To fix this issue:

  • Stop DSS, and make sure no processes are still running
  • Check the allowed number of open files with ulimit -n (as the unix user that runs dss)
  • Increase that limit, ideally to 64,000
  • Restart DSS

If this does not solve your issue, please report the issue to Dataiku support.