Welcome to Lesson 4 - Intro to Hadoop and MapReduce

• 0:01 - 0:04
Hi, my name is Andy and I'm a instructor
• 0:04 - 0:07
at Udacity. I worked with Sara and Ian and
• 0:07 - 0:11
Ngundega to help prepare this lesson and today I'm
• 0:11 - 0:13
going to deliver it for you. So, let's get
• 0:13 - 0:17
started. Up to this point you've familiarized yourself with
• 0:17 - 0:19
MapReduce, you've written some mapper code, some reducer code.
• 0:21 - 0:23
And you probably have a decent understanding of what's
• 0:23 - 0:27
going on behind the scenes. But you might not
• 0:27 - 0:30
yet know when to use MapReduce to solve a
• 0:30 - 0:32
problem. And that's what we're going to try and get at
• 0:32 - 0:34
in this lesson. We're going to give you a bunch of
• 0:34 - 0:37
problems to solve and actually, each of these problems has
• 0:37 - 0:41
been deliberately selected, because each of these problems actually
• 0:41 - 0:45
represents some larger class of problems. In reality, the problems
• 0:45 - 0:48
you're likely to run into on the job are going
• 0:48 - 0:52
to fall into one of these certain classes of problems,
• 0:52 - 0:54
which is very convenient because it means you
• 0:54 - 0:58
can apply a sort of boiler plate solution, with
• 0:58 - 1:03
some modifications. These boilerplate solutions we call design patterns,
• 1:03 - 1:06
and they're really helpful. In this lesson we'll learn
• 1:06 - 1:08
about some of these design patterns, and we'll
• 1:08 - 1:12
practice using them on various problems. We're not going to
• 1:12 - 1:14
get into the details of where the patterns came
• 1:14 - 1:17
from, or why they look the way they do,
• 1:17 - 1:19
but, at the very least, at the end of this
• 1:19 - 1:22
lesson, you will have, well for one, you'll practice using these
• 1:22 - 1:25
patterns and you also have a resource. That you can always
• 1:25 - 1:28
come back to whenever you run into a problem that can
• 1:28 - 1:31
be solved using one of these patterns. If this kind of
• 1:31 - 1:34
stuff is really interesting to you, you should definitely check out
• 1:34 - 1:38
a book called MapReduce Design Patterns. It's written by Donald Miner
• 1:38 - 1:43
and Adam Shook and it's really interesting. Anyways, let's get started.
Tytuł:
Welcome to Lesson 4 - Intro to Hadoop and MapReduce
Opis:

more » « less
Video Language:
English
Team:
Udacity
Projekt:
ud617 - Intro to Hadoop and Mapreduce
Duration:
01:44
 Udacity Robot edited angielski subtitles for 07-01 Welcome to Lesson 4 Udacity Robot edited angielski subtitles for 07-01 Welcome to Lesson 4 Cogi-Admin edited angielski subtitles for 07-01 Welcome to Lesson 4

English subtitles

Revisions Compare revisions

• API
Udacity Robot
• API
Udacity Robot
• API