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	<title>transform - 四号程序员</title>
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		<title>Hive中的TRANSFORM：使用脚本完成Map/Reduce。</title>
		<link>https://www.coder4.com/archives/4052</link>
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		<pubDate>Sat, 30 Nov 2013 08:45:39 +0000</pubDate>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[大数据技术]]></category>
		<category><![CDATA[Hive]]></category>
		<category><![CDATA[transform]]></category>
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					<description><![CDATA[数据、例子，修改自：《Hive with Python example》 首先来看一下数据： hive&#62; select * from test; OK 1 3 2 2 3 1 假设，我们要输出每一列的md5值。在目前的hive中是没有这个udf的。 我们看一下Python的代码： #!/home/tops/bin/python import sys import hashlib for line in sys.st[......] 继续阅读]]></description>
		
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