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123 lines
5.2 KiB
123 lines
5.2 KiB
11 months ago
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<!DOCTYPE html>
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<title>Julio Biason .Me 4.3</title>
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<link rel="stylesheet" href="https://blog.juliobiason.me/print.css" media="print">
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</head>
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<body class=" ">
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<div class="sidebar">
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<div class="container sidebar-sticky">
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<div class="sidebar-about">
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<a href="https://blog.juliobiason.me"><h1>Julio Biason .Me 4.3</h1></a>
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<p class="lead">Old school dev living in a 2.0 dev world</p>
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</div>
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<ul class="sidebar-nav">
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<li class="sidebar-nav-item"><a href="/">English</a></li>
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<li class="sidebar-nav-item"><a href="/pt">Português</a></li>
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<li class="sidebar-nav-item"><a href="/tags">Tags (EN)</a></li>
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<li class="sidebar-nav-item"><a href="/pt/tags">Tags (PT)</a></li>
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</ul>
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<div class="content container">
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<div class="post">
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<h1 class="post-title">Hadoop in Practice - Alex Holmes</h1>
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<span class="post-date">
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2018-02-16
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<a href="https://blog.juliobiason.me/tags/books/">#books</a>
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<a href="https://blog.juliobiason.me/tags/alex-holmes/">#alex holmes</a>
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<a href="https://blog.juliobiason.me/tags/reviews/">#reviews</a>
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<a href="https://blog.juliobiason.me/tags/ti/">#ti</a>
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<a href="https://blog.juliobiason.me/tags/hadoop/">#hadoop</a>
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<a href="https://blog.juliobiason.me/tags/big-data/">#big data</a>
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<a href="https://blog.juliobiason.me/tags/stars-1/">#stars:1</a>
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<a href="https://blog.juliobiason.me/tags/published-2012/">#published:2012</a>
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</span>
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<p><a href="https://www.goodreads.com/book/show/13496907-hadoop-in-practice">GoodReads Summary</a>:
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Hadoop in Practice collects nearly 100 Hadoop examples and presents them in a
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problem/solution format. Each technique addresses a specific task you'll face,
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like querying big data using Pig or writing a log file loader. You'll explore
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each problem step by step, learning both how to build and deploy that specific
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solution along with the thinking that went into its design. As you work
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through the tasks, you'll find yourself growing more comfortable with Hadoop
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and at home in the world of big data.</p>
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<span id="continue-reading"></span><div>
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★☆☆☆☆
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</div>
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<p>First thing: This is not about how to deal with Hadoop in a real environment;
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this a cookbook of recipes for working with Hadoop, some of them that you
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won't ever use.</p>
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<p>Second: The book uses a structure of
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"Explanation/Problem/Solution/Discussion". While the formula usually works,
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here is simply to add more words, because "Problem" is tailored exclusively to
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pair with the "Explanation". Not only that but "Solution" is basically a
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rehearsal of the "Explanation". Something like "Hadoop comes with it's own
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class for dealing with X file format; Problem: You have files in the X format
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and want to process them in Hadoop; Solution: Use the classes in Hadoop". This
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basically throw the whole structure under a bus.</p>
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<p>Third: There is plenty of code examples, and most are terrible. I don't mean
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"The code doesn't compile" or "It doesn't follow any good practices". I mean
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it uses some cutesy arrows to point to some pieces of code, which means it's
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an image instead of a real code, which means you can't copy'n'paste if needed.
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Also, those arrows could be easily be converted to comments, except most
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comments would fall into the "i = i + 1; // increments i" category -- useless
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comments pointing to obvious things. If it would tell you <em>why</em> you're
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incrementing "i" instead of what it's doing, it would at least be interesting.</p>
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<p>There may be something useful there if you have a specific problem with
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Hadoop. But if you have a single, specific problem, you'd Google it instead of
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buying a book with a bunch of other solutions that doesn't affect you.</p>
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</div>
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</div>
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</body>
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</html>
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