private void updateReconnectBackoff(NodeConnectionState nodeState) {
        nodeState.reconnectBackoffMs = reconnectBackoff.backoff(nodeState.failedAttempts);
        nodeState.failedAttempts++;
    }
Increment the failure counter, update the node reconnect backoff exponentially.
The delay is reconnect.backoff.ms * 2**(failures - 1) * (+/- 20% random jitter)
Up to a (pre-jitter) maximum of reconnect.backoff.max.ms

@param nodeState The node state object to update
clients/src/main/java/org/apache/kafka/clients/ClusterConnectionStates.java