phstudy

import org.apache.commons.lang.StringUtils;
import org.apache.spark.SparkConf;
import org.apache.spark.api.java.JavaPairRDD;
import org.apache.spark.api.java.JavaSparkContext;
import scala.Tuple2;

import java.util.Arrays;

public class Spark720pStats {
    public static void main(String[] args) {

phstudy

ambassador pattern用途

由於service consumer跟provider之間網路連結是透過hardcode的， 因此service consumer要切換provider往往不太容易。若用ambassador來切換provider，只需重啟ambassador並連接至新的provider

關係由原本的 (consumer) -> (provider) 變成 (consumer) -> (ambassador) -> (provider)

想像一下，假如今天有n個consumers, 未使用ambassador，你需要重啟每個consumers。若使用ambassador，你只需要重啟一個ambassador。

phstudy

cd rathena && sudo docker build -t "study/rathena" .

phstudy

sudo docker run --name rathena-mysql -e MYSQL_ROOT_PASSWORD=rathena731220 -d mysql

phstudy

sudo docker run --name rathena -e AWS=true --link rathena-mysql:mysql -p 6900:6900 -p 6121:6121 -p 5121:5121 -d 'study/rathena:latest'
#sudo docker run --name rathena --link rathena-mysql:mysql --rm -it 'study/rathena:latest' /bin/bash

phstudy

FROM ubuntu:14.04
MAINTAINER Study Hsueh "ph.study@gmail.com"

# Update Ubuntu
RUN apt-get update

# Install tomcat7
RUN apt-get -y install tomcat7

# Expose 8080 port

phstudy

# -*- mode: ruby -*-
# vi: set ft=ruby :

# Vagrantfile API/syntax version. Don't touch unless you know what you're doing!
VAGRANTFILE_API_VERSION = "2"

Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
 config.vm.box = "dummy"
 config.ssh.pty = true

phstudy

IE 7/8/9/10/11 Virtual machines from Microsoft

Linux installation notes (tested under Ubuntu 14.04LTS/12.04LTS), assuming VirtualBox is already installed on host.

• Available images
• Install notes
• Activating images
• Rearming images
• Further notes

phstudy

cd ~/.vagrant.d/boxes/puppetlab-centos-64-nocm/0/virtualbox/ VBoxManage clonehd "box-disk1.vmdk" "cloned-box-disk1.vdi" --format vdi VBoxManage modifyhd "cloned-box-disk1.vdi" --resize 81920 VBoxManage clonehd "cloned-box-disk1.vdi" "cloned-box-disk1.vmdk" --format vmdk # write down uuid

modify box.ovf

start an new vm and attach cloned-box-disk1.vmdk

fdisk /dev/sdX

phstudy

----- TestDFSIO ----- : write
           Date & time: Mon May 19 17:14:20 CST 2014
       Number of files: 10
Total MBytes processed: 10000.0
     Throughput mb/sec: 13.56559439686689
Average IO rate mb/sec: 13.863067626953125
 IO rate std deviation: 2.1142203063369194
    Test exec time sec: 321.241

----- TestDFSIO ----- : write