@Override
    public void requestTaskReconfiguration(final String connName) {
        log.trace("Submitting connector task reconfiguration request {}", connName);

        addRequest(
            () -> {
                reconfigureConnectorTasksWithRetry(time.milliseconds(), connName);
                return null;
            },
            (error, result) -> {
                if (error != null) {
                    log.error("Unexpected error during task reconfiguration: ", error);
                    log.error("Task reconfiguration for {} failed unexpectedly, this connector will not be properly reconfigured unless manually triggered.", connName);
                }
            }
        );
    }
Close resources managed by this herder but which are not explicitly started.
connect/runtime/src/main/java/org/apache/kafka/connect/runtime/distributed/DistributedHerder.java