} else {
        readyQueues.remove(taskQueue)
      }
    }

    if (coordinatorWaiting) {
      backend.coordinatorNotify(this@TaskRunner)
    } else {
      startAnotherThread()
    }
  }

  private fun beforeRun(task: Task) {
    assertLockHeld()

    task.nextExecuteNanoTime = -1L
    val queue = task.queue!!
    queue.futureTasks.remove(task)
    readyQueues.remove(queue)

    val calls = connection.calls
    val index = calls.indexOfFirst { it.get() == this@RealCall }
    check(index != -1)

    calls.removeAt(index)
    this.connection = null

    if (calls.isEmpty()) {
      connection.idleAtNs = System.nanoTime()
      if (connectionPool.connectionBecameIdle(connection)) {
        return connection.socket()
      }
    }

    return null
  }

        // Clean up old failure records
        long now = System.currentTimeMillis();
        lastFailureTimes.entrySet().removeIf(entry -> now - entry.getValue() > FAILURE_RECOVERY_TIME * 2);

        // Clean up old consecutive failure counters
        consecutiveFailures.entrySet().removeIf(entry -> {
            String key = entry.getKey();
            Long lastFailure = lastFailureTimes.get(key);

                } else {
                    // Remove failed handle
                    handles.remove(path);
                    guidToHandle.remove(info.getCreateGuid());
                    removePersistedHandle(info);
                    log.warn("Reconnection failed, removed handle for: {}", path);
                }
            }
        } finally {

        }
    }

    /**
     * Removes all channels for a session.
     *
     * @param sessionId the session identifier
     */
    public void removeChannels(String sessionId) {
        ChannelGroup channelGroup = sessionChannels.remove(sessionId);
        if (channelGroup != null) {
            for (ChannelInfo channel : channelGroup.getChannels()) {

			if len(*lri) == 1 {
				// Remove the write lock.
				delete(l.lockMap, name)
			} else {
				// Remove the appropriate read lock.
				*lri = append((*lri)[:index], (*lri)[index+1:]...)
				l.lockMap[name] = *lri
			}
			delete(l.lockUID, formatUUID(args.UID, entry.idx))
			return true
		}
	}

	// None found return false, perhaps entry removed in previous run.
	return false
}

        return null;
    }

    /**
     * Remove and securely wipe a session key
     *
     * @param sessionId unique session identifier
     */
    public void removeSessionKey(String sessionId) {
        checkNotClosed();

        // Remove from memory maps
        SecretKey secretKey = sessionKeys.remove(sessionId);
        byte[] rawKey = rawKeys.remove(sessionId);

        // Wipe the raw key bytes

    /**
     * Simulate a witness unregistration
     *
     * @param registrationId the registration ID to remove
     * @return true if registration was found and removed
     */
    public boolean unregisterWitness(String registrationId) {
        MockRegistration removed = registrations.remove(registrationId);
        if (removed != null) {
            log.debug("Mock unregistered witness: {}", registrationId);
            return true;

        // Remove main key
        keyManager.removeSessionKey(sessionId);

        // Verify main key is removed (archives stay)
        assertFalse(keyManager.hasSessionKey(sessionId), "Main key should be removed");
        // Note: Archives are not automatically removed when removing main key
    }

        return channels.values().stream().filter(c -> c.getTransport() == transport).findFirst().orElse(null);
    }

    /**
     * Remove a channel
     *
     * @param channel channel to remove
     */
    public void removeChannel(ChannelInfo channel) {
        channels.remove(channel.getChannelId());
        try {
            if (channel.getTransport() != null) {
                channel.getTransport().close();