constant timeout exception about etcd4j HOT 3 CLOSED

    String returnVal = null;

    EtcdResponsePromise<EtcdKeysResponse> putPromise = etcdClient.put(etcdKey, etcdValue)
            .timeout(10, TimeUnit.SECONDS).send();
    try {
        EtcdKeysResponse response = putPromise.get();
        returnVal = response.node.value;
        log.debug("Etcd putValue - key {}, value {}, return {}", etcdKey, etcdValue, returnVal);
    } catch (TimeoutException e) {
        // Handle timeout
        log.warn("Etcd putValue timeout exception {}, key {}, value {}", e.getMessage(), etcdKey, etcdValue);
        throw e;
    } catch (Exception e) {
        log.warn("Etcd putValue exception {}, key {}, value {}", e.getMessage(), etcdKey, etcdValue);
        throw e;
    }