Hadoop 技术内幕-畅读网

Hadoop 技术内幕

作者：蔡斌，陈湘萍

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内容简介:

“Hadoop 技术内幕”共两册，分别从源代码的角度对“Common+HDFS”和MapReduce 的架构设计与实现原理进行了极为详细的分析。本书由腾讯数据平台的资深Hadoop 专家、X-RIME 的作者亲自执笔，对Common 和HDFS 的源代码进行了分析，旨在为Hadoop 的优化、定制和扩展提供原理性的指导。

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SHOW FULL COLUMNS FROM `ls_nav` [ RunTime:0.001451s ]
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SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 11 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.000853s ]
SELECT `a`.*,`ap`.`width`,`ap`.`height` FROM `ls_ad` `a` INNER JOIN `ls_ad_position` `ap` ON `a`.`pid`=`ap`.`id` WHERE `pid` = 14 AND `ap`.`client` = '2' AND `a`.`status` = '1' AND `a`.`del` = '0' AND `ap`.`status` = '1' AND `ap`.`del` = '0' ORDER BY `sort` DESC,`id` DESC [ RunTime:0.000823s ]
SELECT * FROM `ls_goods` WHERE `del` = 0 AND `status` = 1 AND `create_time` <= 1753168555 ORDER BY `create_time` DESC LIMIT 5 [ RunTime:0.470082s ]

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