After installing Hive, Hadoop and Spark successfully, we can now proceed to run some sample applications to see if they are configured appropriately.  We can use Spark Pi and Spark WordCount programs to validate our Spark installation. We can also explore how to run Spark jobs from the command line and Spark shell.

### **4.1 Spark Pi**

    /**
     * @deprecated Since Maven 4: use {@link #getProjectActivation()}.
     */
    @Deprecated
    List<String> getSelectedProjects();

    /**
     * @param projects the projects to exclude
     * @return this MavenExecutionRequest
     * @since 3.2
     * @deprecated Since Maven 4: use {@link #getProjectActivation()}.
     */
    @Deprecated

      {
         "datasource": {
            "type": "datasource",
            "uid": "-- Mixed --"
         },
         "description": "Number of push errors. Many of these are at least potentional fatal and should be explored in-depth via Istiod logs.\nNote: metrics here do not use rate() to avoid missing transition from \"No series\"; series are not reported if there are no errors at all.\n",
         "fieldConfig": {
            "defaults": {

		ns := s.namespaces.Get(pod.Namespace, "")
		if ns == nil {
			log.Warnf("failed to find namespace %s for pod %s", pod.Namespace, pod.Name)
		}

		// Exclude ztunnels, and terminated daemonset pods
		// from the snapshot.
		if !util.IsZtunnelPod(s.systemNamespace, pod) &&
			!kube.CheckPodTerminal(pod) &&
			util.PodRedirectionActive(pod) {
			pods = append(pods, pod)

		// Matched an extension to compress, do not exclude.
		return false
	}

	if len(cfg.MimeTypes) > 0 && hasPattern(cfg.MimeTypes, contentType) {
		// Matched an MIME type to compress, do not exclude.
		return false
	}

	// Did not match any inclusion filters, exclude from compression.
	return true
}

// Utility which returns if a string is present in the list.

public class InvokableTest extends TestCase {
  // Historically Invokable inherited from java.lang.reflect.AccessibleObject. That's no longer the
  // case, but we do check that its API still has the same public methods. We exclude some methods
  // that were added in Java 9 and that people probably weren't calling via Invokable, namely
  // `boolean canAccess(Object)`.
  public void testApiCompatibleWithAccessibleObject() {

You can also use the *path operation decorator* parameters `response_model_include` and `response_model_exclude`.

They take a `set` of `str` with the name of the attributes to include (omitting the rest) or to exclude (including the rest).

This can be used as a quick shortcut if you have only one Pydantic model and want to remove some data from the output.

/// tip

public class InvokableTest extends TestCase {
  // Historically Invokable inherited from java.lang.reflect.AccessibleObject. That's no longer the
  // case, but we do check that its API still has the same public methods. We exclude some methods
  // that were added in Java 9 and that people probably weren't calling via Invokable, namely
  // `boolean canAccess(Object)` and `boolean trySetAccessible()`.
  public void testApiCompatibleWithAccessibleObject() {

  /**
   * Tag interface marking trusted subclasses. This enables some optimizations. The implementation
   * of this interface must also be an AbstractFuture and must not override or expose for overriding
   * any of the public methods of ListenableFuture.
   */
  interface Trusted<V extends @Nullable Object> extends ListenableFuture<V> {}

     * constructing a {@link java.util.Date} object (i.e. seconds since Epoch
     * 1970). Times should be the same as those reported using the properties
     * dialog of the Windows Explorer program.
     *
     * @return The number of milliseconds since the 00:00:00 GMT, January 1,
     *         1970 as a <code>long</code> value
     * @throws CIFSException
     */