10. How do I check if a node is a coordinator node or a worker node?

Use either of these two methods:

• Run the nodeinfo command as described in Run Utility Commands in a Cluster.

• Add the following code in the node bootstrap script:

  #!/bin/bash
  
  source /usr/lib/hustler/bin/qubole-bash-lib.sh
  is_master=`nodeinfo is_master`
  if [[ "$is_master" == "1" ]]; then
  -----your code here--