Getting debug info from a non-responsive node

Owned by Florian Lahr (Unlicensed)
Last updated: Dec 17, 2015

In a node doesn't respond anymore, but the process is still running, we need two things for debugging:

  • jstack <pid>
  • jmap -histo:live <pid>

The two tools above are included in the Java SE Development Kit, you can download here for your system: http://www.oracle.com/technetwork/java/javase/downloads/index.html

Please copy the output of both commands into a file, compress it and send it to us then.