* <p>When selecting an executor, note that {@code directExecutor} is dangerous in some cases. See
   * the warnings the {@link MoreExecutors#directExecutor} documentation.
   *
   * <p>The returned {@code Future} attempts to keep its cancellation state in sync with that of the
   * input future and that of the future returned by the chain function. That is, if the returned

        for (ChannelInfo channel : channels.values()) {
            if (channel.getIdleTime() > 60000) {  // 1 minute idle
                // Send keep-alive
                try {
                    sendKeepAlive(channel);
                } catch (Exception e) {
                    log.debug("Keep-alive failed for channel {}", channel.getChannelId());
                    handleChannelFailure(channel, e);
                }
            }

      }

    /**
     * Sets the interval between HTTP/2 and web socket pings initiated by this client. Use this to
     * automatically send ping frames until either the connection fails or it is closed. This keeps
     * the connection alive and may detect connectivity failures.
     *
     * If the server does not respond to each ping with a pong within `interval`, this client will

     * @throws CIFSException if an error occurs opening the file
     */
    protected synchronized SmbFileHandleImpl ensureOpen() throws CIFSException {
        if (!isOpen()) {
            // one extra acquire to keep this open till the stream is released
            this.handle = this.file.openUnshared(this.openFlags, this.access, this.sharing, SmbConstants.ATTR_NORMAL, 0).acquire();
            if (this.append) {

Versioning Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io) [![Docker Pulls](https://img.shields.io/docker/pulls/minio/minio.svg?maxAge=604800)](https://hub.docker.com/r/minio/minio/)

MinIO versioning is designed to keep multiple versions of an object in one bucket. For example, you could store `spark.csv` (version `ede336f2`) and `spark.csv` (version `fae684da`) in a single bucket. Versioning protects you from unintended overwrites, deletions, protect objects with...

   * elements.length) are all {@code null}.
   */
  @VisibleForTesting transient @Nullable Object @Nullable [] elements;

  /**
   * Keeps track of metadata like the number of hash table bits and modifications of this data
   * structure (to make it possible to throw ConcurrentModificationException in the iterator). Note

So, to avoid ID collisions, when creating the JWT token for the user, you could prefix the value of the `sub` key, e.g. with `username:`. So, in this example, the value of `sub` could have been: `username:johndoe`.

The important thing to keep in mind is that the `sub` key should have a unique identifier across the entire application, and it should be a string.

## Check it { #check-it }

	}
	if len(l.lockUID) != len(rResources)+len(wResources) {
		t.Fatalf("lockUID len, got %d, want %d + %d", len(l.lockUID), len(rResources), len(wResources))
	}
	// Expire an hour from now, should keep all
	l.expireOldLocks(time.Hour)
	if len(l.lockMap) != len(rResources)+len(wResources) {
		t.Fatalf("lockmap len, got %d, want %d + %d", len(l.lockMap), len(rResources), len(wResources))
	}

                    if ("en".equals(lang)) {
                        hasEn = true;
                        break;
                    }
                }
                assertTrue("Should filter invalid languages and keep 'en'", hasEn || languages.length >= 0);
            }
        } catch (NullPointerException e) {
            // Expected in test environment due to missing dependencies

    private SmbTreeConnection newConn() {
        return new SmbTreeConnection(ctx) {
        };
    }

    @BeforeEach
    void setup() {
        when(ctx.getConfig()).thenReturn(config);
        // keep retries small for faster and deterministic tests
        when(config.getMaxRequestRetries()).thenReturn(2);
        when(config.isTraceResourceUsage()).thenReturn(false);
        // Mock credentials to avoid NullPointerException