// Second call attempts the pooled connection, and it fails. Then it retries a new route which
    // succeeds.
    val response2 = client.newCall(request).execute()
    assertThat(response2.body.string()).isEqualTo("abc")
    assertThat(server.takeRequest().exchangeIndex).isEqualTo(1) // Pooled connection.
    assertThat(server.takeRequest().exchangeIndex).isEqualTo(0) // New connection.

    };
  }

  /**
   * Combines two iterators into a single iterator. The returned iterator iterates across the
   * elements in {@code a}, followed by the elements in {@code b}. The source iterators are not
   * polled until necessary.
   *
   * <p>The returned iterator supports {@code remove()} when the corresponding input iterator
   * supports it.
   */
  public static <T extends @Nullable Object> Iterator<T> concat(

	objAPI := newObjectLayerFn()
	if objAPI == nil {
		return np, grid.NewRemoteErr(errServerNotInitialized)
	}

	pools, ok := objAPI.(*erasureServerPools)
	if !ok {
		return np, grid.NewRemoteErr(errors.New("not a pooled setup"))
	}

	pools.StopRebalance()
	return
}

func (s *peerRESTServer) LoadRebalanceMetaHandler(mss *grid.MSS) (np grid.NoPayload, nerr *grid.RemoteErr) {
	objAPI := newObjectLayerFn()

    new in this release. Pings are used for connections that are busy carrying
    calls and for idle connections in the connection pool. (Pings do not impact
    when pooled connections are evicted).

    If you have a configured ping interval, you should confirm that it is long
    enough for a roundtrip from client to server. If your ping interval is too

    val requestBodyDelay = 250L
    val responseHeadersStartDelay = 250L
    val responseBodyStartDelay = 250L
    val responseBodyEndDelay = 250L

    // Warm up the client so the timing part of the test gets a pooled connection.
    server.enqueue(MockResponse())
    val warmUpCall =
      client.newCall(
        Request
          .Builder()
          .url(server.url("/"))
          .build(),
      )

				Maintenance                  bool
				PoolID, SetID                int
				Healthy                      bool
				HealthyRead                  bool
				HealthyDrives, HealingDrives int
				ReadQuorum, WriteQuorum      int
			}{
				Maintenance:   opts.Maintenance,
				SetID:         setIdx,
				PoolID:        poolIdx,

     *   failure to reach any individual IP address doesn't fail the overall request. This can
     *   increase availability of multi-homed services.
     *
     * * **Stale pooled connections.** The [ConnectionPool] reuses sockets
     *   to decrease request latency, but these connections will occasionally time out.
     *
     * * **Unreachable proxy servers.** A [ProxySelector] can be used to