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import sys
import functools
import statistics

lines = sys.stdin.readlines()

nOfLines = int(lines[0][:-1])

nlist = [float(x) for x in lines[1].split()]

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Instruction for docker

• Pre-Installation Steps

  • basic steps

    $ sudo apt update
    $ sudo apt-get install \
      apt-transport-https \
      ca-certificates \
      curl \
      gnupg \

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# pre
yum -y install epel-release  yum-plugin-priorities 
# install tripleo repos

# This will pull the latest version RPM
PKG=$(curl https://trunk.rdoproject.org/centos7/current/ | grep python2-tripleo-repos- | awk -F'"' '{print $8}')

# This will install it
yum install -y https://trunk.rdoproject.org/centos7/current/${PKG}

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INFO:tripleo_common.image.image_uploader:Running skopeo inspect docker://docker.io/tripleorocky/centos-binary-cron:current-tripleo
INFO:tripleo_common.image.image_uploader:Running skopeo inspect docker://docker.io/tripleorocky/centos-binary-glance-api:current-tripleo
INFO:tripleo_common.image.image_uploader:Running skopeo inspect docker://docker.io/tripleorocky/centos-binary-haproxy:current-tripleo
INFO:tripleo_common.image.image_uploader:Running skopeo inspect docker://docker.io/tripleorocky/centos-binary-heat-api-cfn:current-tripleo
INFO:tripleo_common.image.image_uploader:Running skopeo inspect docker://docker.io/tripleorocky/centos-binary-heat-engine:current-tripleo
INFO:tripleo_common.image.image_uploader:Running skopeo inspect docker://docker.io/tripleorocky/centos-binary-ironic-api:current-tripleo
INFO:tripleo_common.image.image_uploader:Running skopeo inspect docker://docker.io/tripleorocky/centos-binary-ironic-conductor:current-tripleo
INFO:tripleo_common.image.image_uploader:Running skopeo inspect d

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Spark - High availability

Components in play

As a reminder, here are the components in play to run an application:

• The cluster:
  • Spark Master: coordinates the resources
  • Spark Workers: offer resources to run the applications
• The application:

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const mapopen = ['[', '{', '(']
const mapclosing = [']', '}', ')']

function isValid(input) {
    let openmatch, elem
    let list = []
    for (let i = 0; i < input.length; i++) {
      elem = input[i]
      if (mapclosing.indexOf(elem) > -1) {
        openmatch = mapopen[mapclosing.indexOf(elem)]

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var array = [10, 20, 20, 10, 10, 30, 50, 10, 20, 4, 20, 30, 500, 500, 500];

const unique = (array) => array.filter((item, i, list) => list.indexOf(item) === i);
const countInArray = (array, what) => array.filter(item => item == what).length;

const keys = unique(arr)
let result = 0;
keys.map(key => {
    var pair = Math.floor(countInArray(arr, key)/2);
    if (pair > 0) {

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package main

import (
	"fmt"
	"flag" 
	"os"
	"log"
	"os/signal"
	"syscall"

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var zookeeper = require('node-zookeeper-client');

var client = zookeeper.createClient(`${process.env.ZKPR_HOST || localhost}:${process.env.ZKPR_PORT || 2181}`);

client.once('connected', function () {
    console.log('Connected to ZooKeeper.');

    // Create zNode
    let zNode = `/zoo${Math.floor((Math.random() * 100000) + 1)}`;
    client.create(

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#!/bin/bash
# @description: add this file to path /bin/
# set_env_var variable_name variable value
VAR=$1
VAL=$2

set_env_v () {
  echo 'export '$1'='$2 >> /home/$USER/.bashrc
}