```
./bin/spark-submit --class org.apache.spark.examples.SparkPi \
    --master yarn-client \
    --num-executors 1 \
    --driver-memory 512m \
    --executor-memory 512m \
    --executor-cores 1 \
    examples/jars/spark-examples*.jar 10
```

The job should produce an output as shown below. Note the value of pi in the output.

```

    protected String getProjectsDirectory() {
        return "src/test/projects/lifecycle-executor";
    }

    // -----------------------------------------------------------------------------------------------
    // Tests which exercise the lifecycle executor when it is dealing with default lifecycle phases.

import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ConcurrentNavigableMap;
import java.util.concurrent.ConcurrentSkipListMap;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.LinkedBlockingDeque;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.ThreadPoolExecutor;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit tests for {@link Futures#transformAsync(ListenableFuture, AsyncFunction, Executor)}.
 *
 * @author Nishant Thakkar
 */
@NullUnmarked
public class FuturesTransformAsyncTest extends AbstractChainedListenableFutureTest<String> {
  protected static final int SLOW_OUTPUT_VALID_INPUT_DATA = 2;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutionException;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit tests for {@link Futures#transformAsync(ListenableFuture, AsyncFunction, Executor)}.
 *
 * @author Nishant Thakkar
 */
@NullUnmarked
public class FuturesTransformAsyncTest extends AbstractChainedListenableFutureTest<String> {
  protected static final int SLOW_OUTPUT_VALID_INPUT_DATA = 2;

    val boom = RuntimeException("boom!")
    addInterceptor(network) { chain: Interceptor.Chain? -> throw boom }
    val executor = ExceptionCatchingExecutor()
    client =
      client
        .newBuilder()
        .dispatcher(Dispatcher(executor))
        .build()
    val request =
      Request
        .Builder()
        .url(server.url("/"))
        .build()

            dependency.setVersion("1.2.3");
            dependency.setScope("system");
            try {
                dependency.setSystemPath(new File(
                                "src/test/projects/lifecycle-executor/project-with-additional-lifecycle-elements/pom.xml")
                        .getCanonicalPath());
            } catch (IOException e) {
                throw new RuntimeException(e);
            }

     */
    public static ExtractorFactory getExtractorFactory() {
        return getComponent(EXTRACTOR_FACTORY);
    }

    /**
     * Gets a job executor by name.
     * @param name The name of the job executor.
     * @return The job executor instance.
     */
    public static JobExecutor getJobExecutor(final String name) {
        if (name.endsWith(JOB_EXECUTOR_SUFFIX)) {
            return getComponent(name);

 *  * By completing.
 */
class TaskFaker : Closeable {
  val logger = Logger.getLogger("TaskFaker." + instance++)

  /** Though this executor service may hold many threads, they are not executed concurrently. */
  private val tasksExecutor = Executors.newCachedThreadPool(threadFactory("TaskFaker"))

  /**
   * True if this task faker has ever had multiple tasks scheduled to run concurrently. Guarded by
   * `this`.

public class ChannelFailover {
    private final ChannelManager manager;
    private final ExecutorService executor;
    private final Map<String, FailoverState> failoverStates;
    
    public ChannelFailover(ChannelManager manager) {
        this.manager = manager;
        this.executor = Executors.newCachedThreadPool();
        this.failoverStates = new ConcurrentHashMap<>();
    }