#! /usr/bin/env bash
zookeeper-server \
hadoop-hdfs-datanode \
hadoop-hdfs-journalnode \
hadoop-hdfs-namenode \
hadoop-hdfs-secondarynamenode \
hadoop-httpfs \
hadoop-mapreduce-historyserver \
#!/usr/bin/env bash
grep "^[^_].\+(){$" $0 | while read line; do
local cmd=$(echo "$line" | sed "s/(){//g")
local info=$(grep -C0 -A0 -B1 "$cmd(){" $0 | sed "N;s/\n.*//g" )
printf " $0 %-20s %-40s\n" "$cmd" "$info" | grep "#"
done; echo "";
# Runs Cloudera Quick Start image with commonly used Web UI ports. Perquisites: Cloudera Quickstart Image already pulled as cloudera
View pedantically_commented_playbook.yml
# ^^^ YAML documents must begin with the document separator "---"
#### Example docblock, I like to put a descriptive comment at the top of my
#### playbooks.
# Overview: Playbook to bootstrap a new host for configuration management.
# Applies to: production
# Description:
# Ensures that a host is configured for management with Ansible.
package example;
import java.util.Properties;
import cascading.flow.Flow;
import cascading.flow.FlowDef;
import cascading.flow.hadoop.HadoopFlowConnector;
import cascading.pipe.CoGroup;
import cascading.pipe.Pipe;
import cascading.pipe.assembly.CountBy;

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

So you're curious in learning this new thing called Reactive Programming, particularly its variant comprising of Rx, Bacon.js, RAC, and others.

Learning it is hard, even harder by the lack of good material. When I started, I tried looking for tutorials. I found only a handful of practical guides, but they just scratched the surface and never tackled the challenge of building the whole architecture around it. Library documentations often don't help when you're trying to understand some function. I mean, honestly, look at this:

Rx.Observable.prototype.flatMapLatest(selector, [thisArg])

Projects each element of an observable sequence into a new sequence of observable sequences by incorporating the element's index and then transforms an observable sequence of observable sequences into an observable sequence producing values only from the most recent observable sequence.

View gist:bdc0b9269d78512a3a3e
package com.tistory.devyongsik.hadoop.mapre;
import org.apache.hadoop.mapreduce.Mapper;
View HighchartsConfig.json
"colors": ["#7cb5ec", "#434348", "#90ed7d", "#f7a35c",
"#8085e9", "#f15c80", "#e4d354", "#8085e8", "#8d4653", "#91e8e1"],
"symbols": ["circle", "diamond", "square", "triangle", "triangle-down"],
"lang": {
"loading": "Loading...",
"months": ["January", "February", "March", "April", "May", "June", "July",
"August", "September", "October", "November", "December"],
"shortMonths": ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
"weekdays": ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
View filesystem.js
* Prepare the App Folder
window.appRootDirName = ".myapp";
document.addEventListener("deviceready", onDeviceReady, false);
function onDeviceReady() {
console.log("device is ready");
window.requestFileSystem = window.requestFileSystem || window.webkitRequestFileSystem;
View ExampleServer.scala
package com.vast.example
import java.util.UUID
import java.util.concurrent.{Executors, TimeUnit}
import com.twitter.finagle.http.Http
import com.twitter.finagle.builder.{Server, ServerBuilder}
import com.twitter.finagle.service.TimeoutFilter
import com.twitter.finagle.{Service, SimpleFilter, GlobalRequestTimeoutException}
View gist:8486913
var crypto = require('crypto');
* Calculates the hash/checksum of a string. Default algorithm is MD5.
* @param {String} str
* @param {String} algorithm
* @return {String} checksum
* @api public