### EventListener

Subclass [EventListener](https://square.github.io/okhttp/5.x/okhttp/okhttp3/-event-listener/) and override methods for the events you are interested in. In a successful HTTP call with no redirects or retries the sequence of events is described by this flow.

![Events Diagram](../assets/images/******@****.***)

let us take a gzip compressed CSV file. Without S3 Select, we would need to download, decompress and process the entire CSV to get the data you needed. With Select API, can use a simple SQL expression to return only the data from the CSV you’re interested in, instead of retrieving the entire object. Following Python example shows how to retrieve the first column `Location` from an object containing data in CSV format.

Please replace ``endpoint_url``,``aws_access_key_id``, ``aws_secret_access_key``,...

  }

  /**
   * Like [Object.wait], but throws an [InterruptedIOException] when interrupted instead of the more
   * awkward [InterruptedException].
   */
  @Throws(InterruptedIOException::class)
  internal fun waitForIo() {
    try {
      wait()
    } catch (_: InterruptedException) {
      Thread.currentThread().interrupt() // Retain interrupted status.
      throw InterruptedIOException()
    }
  }

  /**

   * permits? As explained above, there is no unique answer. If we are primarily interested to deal
   * with underutilization, then we want stored permits to be given out /faster/ than fresh ones,
   * because underutilization = free resources for the taking. If we are primarily interested to
   * deal with overflow, then stored permits could be given out /slower/ than fresh ones. Thus, we

    assertThat(Thread.interrupted()).isFalse();
    SettableFuture<Integer> cancelledFuture = SettableFuture.create();
    cancelledFuture.cancel(true);
    assertThat(Thread.interrupted()).isFalse();
    ListenableFuture<Integer> future = submitAsync(() -> cancelledFuture, directExecutor());
    assertThat(future.isDone()).isTrue();
    assertThat(Thread.interrupted()).isFalse();
  }

    assertThat(Thread.interrupted()).isFalse();
    SettableFuture<Integer> cancelledFuture = SettableFuture.create();
    cancelledFuture.cancel(true);
    assertThat(Thread.interrupted()).isFalse();
    ListenableFuture<Integer> future = submitAsync(() -> cancelledFuture, directExecutor());
    assertThat(future.isDone()).isTrue();
    assertThat(Thread.interrupted()).isFalse();
  }

        // Wait for all threads to complete
        for (Thread thread : threads) {
            try {
                thread.join();
            } catch (InterruptedException e) {
                fail("Thread interrupted");
            }
        }

        // Verify all stores were counted
        assertEquals(1000L, callback.getDocumentSize());

        // Test commit after concurrent operations

        try {
            cleanupScheduler.awaitTermination(5, TimeUnit.SECONDS);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            log.warn("Interrupted while shutting down cleanup scheduler", e);
        }

        log.info("Authentication rate limiter closed");
    }

    /**
     * Per-account attempt tracking
     */

                    Thread.sleep(Long.MAX_VALUE);
                } catch (InterruptedException e) {
                    Thread.currentThread().interrupt();
                    throw new CIFSException("Watch interrupted");
                }
                return Collections.emptyList();
            }

            @Override
            public List<FileNotifyInformation> call() throws CIFSException {

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