return lengthIfKnown.get();
    }

    Closer closer = Closer.create();
    try {
      Reader reader = closer.register(openStream());
      return countBySkipping(reader);
    } catch (Throwable e) {
      throw closer.rethrow(e);
    } finally {
      closer.close();
    }
  }

  private long countBySkipping(Reader reader) throws IOException {
    long count = 0;
    long read;

        ParseException parseException = new ParseException("Query parsing failed");
        QueryParseException queryParseException = new QueryParseException(parseException);

        Throwable cause = queryParseException.getCause();
        assertNotNull(cause);
        assertTrue(cause instanceof ParseException);
        assertEquals(parseException, cause);

    AtomicBoolean actualIsOccupied = new AtomicBoolean();
    AtomicBoolean actualIsOccupiedByCurrentThread = new AtomicBoolean();
    AtomicInteger actualOccupiedDepth = new AtomicInteger();
    AtomicReference<Throwable> thrown = new AtomicReference<>();
    joinUninterruptibly(
        startThread(
            new Runnable() {
              @Override
              public void run() {
                try {

    AtomicBoolean actualIsOccupied = new AtomicBoolean();
    AtomicBoolean actualIsOccupiedByCurrentThread = new AtomicBoolean();
    AtomicInteger actualOccupiedDepth = new AtomicInteger();
    AtomicReference<Throwable> thrown = new AtomicReference<>();
    joinUninterruptibly(
        startThread(
            new Runnable() {
              @Override
              public void run() {
                try {

      this.runtime = runtime;
    }

    @Override
    public void uncaughtException(Thread t, Throwable e) {
      try {
        logger
            .get()
            .log(
                SEVERE,
                String.format(Locale.ROOT, "Caught an exception in %s.  Shutting down.", t),
                e);
      } catch (Throwable errorInLogging) { // sneaky checked exception

     *
     * @param message the detail message describing the exception
     * @param cause the cause of this exception
     */
    public FessSystemException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a new FessSystemException with the specified detail message.
     *
     * @param message the detail message describing the exception

                artifact.getDependencyTrail());
    }

    protected ArtifactNotFoundException(
            String message, Artifact artifact, List<ArtifactRepository> remoteRepositories, Throwable cause) {
        this(
                message,
                artifact.getGroupId(),
                artifact.getArtifactId(),
                artifact.getVersion(),
                artifact.getType(),

        // to currentFuture doesn't race with itself so that currentFuture is assigned in the
        // correct order.
        Throwable scheduleFailure = null;
        Cancellable toReturn;
        lock.lock();
        try {
          toReturn = initializeOrUpdateCancellationDelegate(schedule);
        } catch (Throwable e) {
          // Any Exception is either a RuntimeException or sneaky checked exception.
          //

  public void testForwardExceptionFastPath() throws Exception {
    class FailFuture extends InternalFutureFailureAccess implements ListenableFuture<String> {
      final Throwable failure;

      FailFuture(Throwable throwable) {
        failure = throwable;
      }

      @Override
      public boolean cancel(boolean mayInterruptIfRunning) {

        // to currentFuture doesn't race with itself so that currentFuture is assigned in the
        // correct order.
        Throwable scheduleFailure = null;
        Cancellable toReturn;
        lock.lock();
        try {
          toReturn = initializeOrUpdateCancellationDelegate(schedule);
        } catch (Throwable e) {
          // Any Exception is either a RuntimeException or sneaky checked exception.
          //