-
Notifications
You must be signed in to change notification settings - Fork 146
/
04_SparkStreaming-Stateful-Operators.html
202 lines (176 loc) · 8.15 KB
/
04_SparkStreaming-Stateful-Operators.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Spark 2.0 Workshop - Spark Streaming's Stateful Operators</title>
<meta name="description" content="Spark 2.0 Workshop - Spark Streaming's Stateful Operators">
<meta name="author" content="Jacek Laskowski">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
<link rel="stylesheet" href="css/reveal.css">
<link rel="stylesheet" href="css/theme/beige.css" id="theme">
<!-- Code syntax highlighting -->
<link rel="stylesheet" href="lib/css/zenburn.css">
<!-- Printing and PDF exports -->
<script>
var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = window.location.search.match( /print-pdf/gi ) ? 'css/print/pdf.css' : 'css/print/paper.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
</script>
<!-- https://github.com/hakimel/reveal.js/issues/174 -->
<style>
.slides .header {
position: absolute;
top: 0px;
right: 0px;
}
.slides .footer {
position: absolute;
bottom: 0px;
left: 35%;
}
</style>
<!--[if lt IE 9]>
<script src="lib/js/html5shiv.js"></script>
<![endif]-->
</head>
<body>
<div class="reveal">
<div class="slides">
<section class="intro" data-transition="zoom">
<p>
<img width="15%" style="background:none; border:none; box-shadow:none;" data-src="images/spark-logo.png">
<img width="8%" src="images/jacek_laskowski_20141201_512px.png" style="border: 0">
</p>
<h1>Stateful Operators</h1>
<h3>(mapWithState)</h3>
<h2>Apache Spark 2 / Spark Streaming</h2>
<h4><a href="https://twitter.com/jaceklaskowski">@jaceklaskowski</a> / <a href="http://stackoverflow.com/users/1305344/jacek-laskowski">StackOverflow</a> / <a href="https://github.com/jaceklaskowski">GitHub</a> / <a href="http://bit.ly/mastering-apache-spark">Mastering Apache Spark 2</a></h4>
</section>
<section id="agenda">
<h2>Agenda</h2>
<ol>
<li><a href="#/intro">Spark Streaming</a></li>
<li><a href="#/streaming-context">StreamingContext</a></li>
<li><a href="#/stream-operators">Stream Operators</a></li>
<li><a href="#/web-ui">Web UI</a></li>
</ol>
</section>
<section id="warning">
<h2>Heads-up</h2>
<blockquote>
Spark Streaming had almost no notable changes between Spark 1.6 and Spark 2.0. <b>Jacek</b> believes that it will marked deprecated soon and replaced by the modern <b>Structured Streaming</b>.
</blockquote>
</section>
<section id="intro">
<h2>Spark Streaming</h2>
<ol>
<li><b>Spark Streaming</b> is the incremental stream processing framework for Apache Spark.</li>
<li>Switch to Mastering Apache Spark 2
<ul>
<li><a href="https://jaceklaskowski.gitbooks.io/mastering-apache-spark/content/spark-streaming/spark-streaming.html">Spark Streaming</a></li>
</ul>
</li>
</ol>
</section>
<section id="streaming-context">
<h2>StreamingContext</h2>
<ol>
<li><b>StreamingContext</b> is the entry point for all Spark Streaming functionality.
<pre><code>
val ssc = new StreamingContext(sc, Seconds(5))
</code></pre>
</li>
<li>Switch to Mastering Apache Spark 2
<ul>
<li><a href="https://jaceklaskowski.gitbooks.io/mastering-apache-spark/content/spark-streaming/spark-streaming-streamingcontext.html">StreamingContext — The Entry Point to Spark Streaming</a></li>
</ul>
</li>
</ol>
</section>
<section id="stream-operators">
<h2>Stream Operators</h2>
<ol>
<li><b>Stream operators</b> allow for <b>transformations</b> to the records from input DStreams and ultimately trigger computations using <b>output operators</b>.
</li>
<li>Switch to Mastering Apache Spark 2
<ul>
<li><a href="https://jaceklaskowski.gitbooks.io/mastering-apache-spark/content/spark-streaming/spark-streaming-operators.html">Stream Operators</a></li>
</ul>
</li>
</ol>
</section>
<section id="web-ui">
<h2>Web UI</h2>
<ol>
<li>Streaming applications have their own web UI with <b>Streaming Statistics Page</b></li>
<li>Switch to Mastering Apache Spark 2
<ul>
<li><a href="https://jaceklaskowski.gitbooks.io/mastering-apache-spark/content/spark-streaming/spark-streaming-webui.html">web UI and Streaming Statistics Page</a></li>
</ul>
</li>
</ol>
</section>
<section id="recap">
<h2>Recap</h2>
<ol>
<li><a href="#/intro">Spark Streaming</a></li>
<li><a href="#/streaming-context">StreamingContext</a></li>
<li><a href="#/stream-operators">Stream Operators</a></li>
<li><a href="#/web-ui">Web UI</a></li>
</ol>
</section>
<section id="questions" style="text-align: left">
<h1>Questions?</h1>
<p>
<ul>
<li>Read <a href="https://bit.ly/mastering-apache-spark">Mastering Apache Spark 2</a>
<ul>
<li>https://bit.ly/mastering-apache-spark</li>
</ul>
</li>
<li>Follow <a href="https://twitter.com/jaceklaskowski">@jaceklaskowski</a> on twitter</li>
<li>Upvote <a href="http://stackoverflow.com/users/1305344/jacek-laskowski">my questions and answers on StackOverflow</a></li>
<li>Use <a href="https://github.com/jaceklaskowski">Jacek's code at GitHub</a></li>
<li>Read <a href="https://medium.com/@jaceklaskowski">Jacek Laskowski @ Medium</a></li>
<li>Visit <a href="https://blog.jaceklaskowski.pl">Jacek Laskowski's blog</a></li>
</ul>
</p>
</section>
</div>
</div>
<script src="lib/js/head.min.js"></script>
<script src="js/reveal.js"></script>
<script>
// Full list of configuration options available at:
// https://github.com/hakimel/reveal.js#configuration
Reveal.initialize({
controls: true,
progress: true,
history: true,
center: true,
transition: 'slide', // none/fade/slide/convex/concave/zoom
// Optional reveal.js plugins
dependencies: [
{ src: 'lib/js/classList.js', condition: function() { return !document.body.classList; } },
{ src: 'plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/highlight/highlight.js', async: true, condition: function() { return !!document.querySelector( 'pre code' ); }, callback: function() { hljs.initHighlightingOnLoad(); } },
{ src: 'plugin/zoom-js/zoom.js', async: true },
{ src: 'plugin/notes/notes.js', async: true }
]
});
</script>
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-45999426-3', 'auto');
ga('send', 'pageview');
</script>
</body>
</html>