hadoop Java Programming 學術研究 程式設計

Resource Scheduler , Calculator, Short-Circuit in Hadoop YARN and HDFS

In order to execute the next-year plan, I search the research topics and technologies in Hadoop YARN and HDFS, then make a note as follows: Since Hadoop YARN was proposed, the new generation technology are continusly discussed. For knowing the work of YARN, please refer to the post [1]. The capacity scheduler of YARN[2][3] provides […]

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hadoop Java Programming 程式設計

Process SequenceFile without Enabling Hadoop Platform

Recently I got a requirement for reading Hadoop’s SequenceFile without enabling Hadoop Platform. However, most examples introduce the read/write SequenceFile with Hadoop Platform. How do I read such files without hadoop? There’s a tricky solution in this case. 1. Download Hadoop binary file from hadoop site. For Linux/Unix please directly download it; for Windows, there’s […]

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Explore Your Passwords Stored in Chrome Browser

Google Chrome provided a service which stored people’s accounts and passwords. In past versions of Chrome, it put these private information at the file with path  C:Users<User>AppDataLocalGoogleChromeUser DataDefaultWeb Data on Windows platform. Currently it changed this file path to C:Users<User>AppDataLocalGoogleChromeUser DataDefaultLogin Data. [1] Both these files are stored in SQL Lite format [2].This file stores […]

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Java Programming XML 程式設計 網路 java

Print output while Processing HTML/XML data in Jsoup Project

Currently, I encountered one problem while retrieving XML data from one website. In my case, assume that the original XML document is like <result><device /><name>Allen’s device</name></result> If I use Jsoup.parse(File, “UTF-8”); without additional options, the returned document object will be like: <result><device><name>Allen’s device</name></result> The weired result is <device> is just an open tag but without close […]

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