sunzcdev

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;

/**
 * @title Storage
 * @dev Store & retrieve value in a variable
 */
contract Storage {

sunzcdev

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.4.22 <0.9.0;

library TestsAccounts {
    function getAccount(uint index) pure public returns (address) {
        address[15] memory accounts;
		accounts[0] = 0x5B38Da6a701c568545dCfcB03FcB875f56beddC4;

		accounts[1] = 0xAb8483F64d9C6d1EcF9b849Ae677dD3315835cb2;

sunzcdev

#!/usr/bin/env bash
rm -r ./spark ./spark-2.4.0-bin-without-hadoop.tgz*
wget https://archive.apache.org/dist/spark/spark-2.4.0/spark-2.4.0-bin-without-hadoop.tgz
tar -zxf spark-2.4.0-bin-without-hadoop.tgz -C . && rm spark-2.4.0-bin-without-hadoop.tgz
mv ./spark-2.4.0-bin-without-hadoop/ ./spark
sudo chown -R hduser:hadoop ./spark
cp ./spark/conf/spark-env.sh.template ./spark/conf/spark-env.sh
sed -i '1i\export SPARK_DIST_CLASSPATH=$(~/hadoop-2.9.2/bin/hadoop classpath)' ./spark/conf/spark-env.sh
echo "export SPARK_HOME=/home/hduser/spark" >> ~/.bashrc
echo "export PATH=\$PATH:\${SPARK_HOME}/bin:" >> ~/.bashrc

sunzcdev

public static String readStr(String filepath, int startLine) {
        File file = new File(filepath);
        if (!file.exists()) return "";
        startLine = Math.max(startLine, 1);
        LineNumberReader reader = null;
        StringBuilder sb = new StringBuilder();
        String line;
        try {
            reader = new LineNumberReader(new FileReader(file));
            while ((line = reader.readLine()) != null) {

sunzcdev

private static <T> T hex2Bean(String str, Class<T> deviceAuthClass) {
        try {
            str = str.replace(" ", "");
            byte[] array = new BigInteger(str, 16).toByteArray();
            IoBuffer buffer = IoBuffer.wrap(array);
            Constructor<T> cons = deviceAuthClass.getConstructor(IoBuffer.class);
            return cons.newInstance(buffer);
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {

sunzcdev

#!/bin/bash
sudo apt update
sudo apt -y dist-upgrade
sudo apt install -y wget gedit git subversion unzip software-properties-common dirmngr
echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | \
  sudo tee /etc/apt/sources.list.d/webupd8team-java.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | \
  sudo tee -a /etc/apt/sources.list.d/webupd8team-java.list
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886
sudo apt-get update

sunzcdev

hello world
hello hadoop
hello java
hello oracle
hello android
hello yarn
hello spark
hello zookeeper

sunzcdev

groupadd hadoop
useradd -s /bin/bash -d /home/hduser -m hduser -g hadoop
passwd hduser
adduser hduser sudo
su hduser

sunzcdev

#!/bin/bash
sudo apt install -y wget unzip software-properties-common dirmngr
echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | \
  sudo tee /etc/apt/sources.list.d/webupd8team-java.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu xenial main" | \
  sudo tee -a /etc/apt/sources.list.d/webupd8team-java.list
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys EEA14886
sudo apt-get update
sudo apt-get -y install oracle-java8-installer
wget "https://www-us.apache.org/dist/hadoop/common/hadoop-2.9.2/hadoop-2.9.2.tar.gz"

sunzcdev

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