nixpkgs/nixos/tests/hadoop/yarn.nix

# This only tests if YARN is able to start its services
import ../make-test-python.nix ({ package, ... }: {
  name = "hadoop-yarn";

  nodes = {
    resourcemanager = { ... }: {
      services.hadoop = {
        inherit package;
        yarn.resourcemanager = {
          enable = true;
          openFirewall = true;
        };
      };
    };
    nodemanager = { options, lib, ... }: {
      services.hadoop = {
        inherit package;
        yarn.nodemanager = {
          enable = true;
          openFirewall = true;
        };
        yarnSite = {
          "yarn.resourcemanager.hostname" = "resourcemanager";
          "yarn.nodemanager.log-dirs" = "/tmp/userlogs";
        };
      };
    };
  };

  testScript = ''
    start_all()

    resourcemanager.wait_for_unit("yarn-resourcemanager")
    resourcemanager.wait_for_unit("network.target")
    resourcemanager.wait_for_open_port(8031)
    resourcemanager.wait_for_open_port(8088)

    nodemanager.wait_for_unit("yarn-nodemanager")
    nodemanager.wait_for_unit("network.target")
    nodemanager.wait_for_open_port(8042)

    resourcemanager.succeed("curl -f http://localhost:8088")
    nodemanager.succeed("curl -f http://localhost:8042")
  '';
})