Johannes Rudolph jrudolph

Building (parts of) yugabyte locally

Yugabyte is best built inside of a docker container for the correct runtime environment mimicking the one the actual release is built with itself.

I found a suitable build environment by looking at the yb's CI scripts: https://github.com/yugabyte/yugabyte-db/blob/master/.github/workflows/build.yml.

Steps

Check out the source code.

In general, performance differences are usually negligible as long as they don't turn up during benchmarking (you probably know what people say about premature optimization...).

So, it's mostly a matter of style. Writing a GraphStage is the lowest level you can implement something in akka-stream. It's very explicit and somewhat predictable what happens but the amount of code to write can be quite cumbersome and with a growing number of ports, managing the state space and all the possible interactions can be quite a challenge.

Wiring up predefined combinators using the GraphDSL is therefore often recommended. In the best case it's just "plug and play". On the other hand, it also introduces new degrees of freedom and non-determinism as elements flow

	{
	"nodes": [
	{"id": "n1", "group": 1},
	{"id": "n2", "group": 1},
	{"id": "n3", "group": 1},
	{"id": "n4", "group": 1},
	{"id": "n5", "group": 1},
	{"id": "n6", "group": 1},
	{"id": "n7", "group": 1}
	],

	// copy into project

	import sbt._
	import Keys._
	import Def._
	import sbt.Def
	import sbt.Defaults.allTestGroupsTask
	import sbt.Defaults.loadForParser
	import sbt.Project.inConfig
	import sbt.internal.util.complete.DefaultParsers

	import java.math.BigInteger
	import java.net.DatagramPacket
	import java.net.DatagramSocket
	import java.net.InetAddress
	import java.security.KeyPairGenerator
	import java.security.MessageDigest
	import java.security.SecureRandom
	import java.security.interfaces.ECPrivateKey
	import java.security.interfaces.ECPublicKey
	import java.security.spec.ECPoint

	package akka.sbt.jmh.completion

	import java.io.FileInputStream
	import java.util.Collections

	import pl.project13.scala.sbt.SbtJmh.JmhKeys.Jmh
	import sbt._
	import Keys._
	import org.openjdk.jmh.runner.BenchmarkList
	import org.openjdk.jmh.runner.BenchmarkListEntry

	import java.util.concurrent.ThreadLocalRandom
	import javax.sound.sampled._

	// Program to generate THX Deep Note sound according to the sheet music
	// published to celebrate its 35th birthday
	// https://twitter.com/THX/status/1000077588415447040
	object THX extends App {
	val sampleRate = 44100f
	val af = new AudioFormat(
	sampleRate,

	# use persofoto.de to crop a foto to the right dimensions

	# then use this script to lay it out on a 1600x2312 jpg to print as 9x13
	montage mein-passfoto.jpg mein-passfoto.jpg mein-passfoto.jpg mein-passfoto.jpg -geometry 622x898+89+129 out.jpg

	/*
	* Copyright (C) 2009-2017 Lightbend Inc. <http://www.lightbend.com>
	*/

	import sbt._
	import Keys._

	package sbt {
	object Access {
	def compilerReporter = sbt.Keys.compilerReporter