From f34fe47ae54d8790961d12d571df719bb1535b2d Mon Sep 17 00:00:00 2001
From: cnnrznn <cnnrznn@gmail.com>
Date: Tue, 6 Dec 2016 14:51:02 -0500
Subject: Update dist-langs.md

---
 chapter/4/dist-langs.md | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/chapter/4/dist-langs.md b/chapter/4/dist-langs.md
index 5bfea62..7b1412b 100644
--- a/chapter/4/dist-langs.md
+++ b/chapter/4/dist-langs.md
@@ -4,6 +4,13 @@ title:  "Distributed Programming Languages"
 by: "A Systems Person"
 ---
 
+### Problems of Distributed Programming
+
+* Partial failure
+* Consistency
+* Efficiency
+* Scallability
+
 ### Three major approaches to distributed languages:
 
 #### Shared Memory
@@ -40,6 +47,15 @@ Some languages that use this model are:
 * MapReduce (Spark, Hadoop, etc.)
 * Orleans (Wait, what??)
 
+#### Which is best? Why?
+
+Why is MR all-the-rage?
+
+* Dataflow / MapReduce fundamentally changed the programming style for distributed systems
+* Other models (Actor, DSM) tried to mask distribution
+* By changing the style, programs need necessarily consider communication patterns (disk, network)
+* Although, system may still handle fault tolerance
+
 ### Why GPL's not DSL's?
 
 * problem of domain-composition
-- 
cgit v1.2.3