Once the config changes are applied, proceed to restart **Hadoop** services.

![hdfs-services](https://github.com/minio/minio/blob/master/docs/bigdata/images/image7.png?raw=true "hdfs restart services")

### **3.2 Configure Spark2**

Navigate to **Services** -> **Spark2** -> **CONFIGS** as shown below

   */
  public void testTransitionRace() throws TimeoutException {
    for (int k = 0; k < 1000; k++) {
      List<Service> services = Lists.newArrayList();
      for (int i = 0; i < 5; i++) {
        services.add(new SnappyShutdownService(i));
      }
      ServiceManager manager = new ServiceManager(services);
      manager.startAsync().awaitHealthy();
      manager.stopAsync().awaitStopped(10, TimeUnit.SECONDS);
    }
  }

        HORIZONTAL_VALUES_PAIRED_STATS.leastSquaresFit(),
        HORIZONTAL_VALUES_PAIRED_STATS.yStats().mean());
    assertVerticalLinearTransformation(
        VERTICAL_VALUES_PAIRED_STATS.leastSquaresFit(),
        VERTICAL_VALUES_PAIRED_STATS.xStats().mean());
    assertThrows(IllegalStateException.class, () -> CONSTANT_VALUES_PAIRED_STATS.leastSquaresFit());
  }

  public void testEqualsAndHashCode() {

        HORIZONTAL_VALUES_PAIRED_STATS.leastSquaresFit(),
        HORIZONTAL_VALUES_PAIRED_STATS.yStats().mean());
    assertVerticalLinearTransformation(
        VERTICAL_VALUES_PAIRED_STATS.leastSquaresFit(),
        VERTICAL_VALUES_PAIRED_STATS.xStats().mean());
    assertThrows(IllegalStateException.class, () -> CONSTANT_VALUES_PAIRED_STATS.leastSquaresFit());
  }

  public void testEqualsAndHashCode() {

      serviceAnnotations: {}
      podAnnotations: {}
      type: ClusterIP # change to NodePort or LoadBalancer if need be

      # Setup how istiod Service is configured. See https://kubernetes.io/docs/concepts/services-networking/dual-stack/#services
      ipFamilyPolicy: ""
      ipFamilies: []

      secretVolumes:
      - name: egressgateway-certs
        secretName: istio-egressgateway-certs
        mountPath: /etc/istio/egressgateway-certs

          memory: 1024Mi

      loadBalancerIP: ""
      loadBalancerSourceRanges: []
      serviceAnnotations: {}

      # Setup how istiod Service is configured. See https://kubernetes.io/docs/concepts/services-networking/dual-stack/#services
      ipFamilyPolicy: ""
      ipFamilies: []

      # To generate an internal load balancer:
      # --set serviceAnnotations.cloud.google.com/load-balancer-type=internal
      #serviceAnnotations:

import org.apache.maven.api.di.Singleton;
import org.apache.maven.api.model.Model;
import org.apache.maven.api.services.BuilderProblem;
import org.apache.maven.api.services.ModelBuilderRequest;
import org.apache.maven.api.services.ModelProblem;
import org.apache.maven.api.services.ModelProblemCollector;
import org.apache.maven.api.services.model.*;
import org.apache.maven.model.v4.MavenTransformer;

		Use:   "service",
		Short: "Retrieves services for the specified Ztunnel pod.",
		Long:  `Retrieve information about services for the Ztunnel instance.`,
		Example: `  # Retrieve summary about services configuration for a randomly chosen ztunnel.
  istioctl x ztunnel-config services

  # Retrieve full certificate dump of workloads for a given Ztunnel instance.
  istioctl x ztunnel-config services <ztunnel-name[.namespace]> -o json
`,

    "functionalTests": false,
    "crossVersionTests": false
  },
  {
    "name": "base-services",
    "path": "platforms/core-runtime/base-services",
    "unitTests": true,
    "functionalTests": true,
    "crossVersionTests": false
  },
  {
    "name": "base-services-groovy",
    "path": "platforms/core-configuration/base-services-groovy",
    "unitTests": true,
    "functionalTests": false,
    "crossVersionTests": false

      entryPoints = ["http"]
      service = "app"
      rule = "PathPrefix(`/api/v1`)"
      middlewares = ["api-stripprefix"]

  [http.services]

    [http.services.app]
      [http.services.app.loadBalancer]
        [[http.services.app.loadBalancer.servers]]
          url = "http://127.0.0.1:8000"
```

This file configures Traefik to use the path prefix `/api/v1`.