compnski

package main

import (
	"flag"
	"fmt"
	"strings"
)

const DB_REDSHIFT = "redshift"
const DB_POSTGRES = "postgres"

jirutka

# default boring output of Psych.dump
---
:response:
  :body: ! "{\n  \"page\": 1,\n  \"results\": [\n    \"item\", \"another\"\n  ],\n
    \ \"total_pages\": 0\n}\n"
  :status: 200
:person:
  name: Steve
  age: 24
:array:

bastman

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

smartnose

Spark internals through code

Nothing gives you more detail about spark internals than actually reading it source code. In addition, you get to learn many design techniques and improve your scala coding skills. These are the random notes I make while reading the spark code. The best way to comprehend the notes is to load spark code into an IDE, e.g. IntelliJ, and navigate the code on the side.

Genesis - creation of a spark cluster

The scripts for creating a spark cluster are: start-master.sh and start-slave.sh. Read them carefully, and you can see that both scripts are very similar except the values for $CLASS variable. For start-master.sh, the value is CLASS="org.apache.spark.deploy.master.Master", while the value for start-slave.sh is shown below with more context.

# NOTE: This exact class name is matched downstream by SparkSubmit.

yossorion

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

scottjehl

var list = [];
document.querySelectorAll("body *")
   .forEach(function(elem){ 
    if(elem.getBoundingClientRect().width > document.body.getBoundingClientRect().width){ 
      list.push(elem.outerHTML.split('>')[0] + '>'); 
    } 
}); 
confirm( "these elements are wider than the viewport:\n\n " + list.join("\n") )