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Read the file & http: //www.aliyun.com/zixun/aggregation/37954.html "> nbsp; read the file internal working mechanism see below: The client calls FileSystem object (corresponding to the HDFS file system, call DistributedFileSystem object) Open () method to open the file (ie the first step in the diagram), DistributedFileSyst ...

Company Smartphone Security (B) - Aim WSUS Server. After scanning found that there are two hosts to meet our needs, send us a stable remote shell. They are WSUS (Windows Update Server) and Antivirus (Antivirus Related Server), respectively, because these services must have Internet access to update the database, let's start from the first. There is an interesting question, NTLM hash of the local administrator is enough to access this server? Perhaps our answer is yes. In a public ...

It's nice to see that Yahoo donated zookeeper has migrated from SourceForge to Apache and become a subproject of Hadoop. So what is zookeeper? Zookeeper is an open-source implementation of Google's chubby. is a highly effective and reliable collaborative work system. Zookeeper can be used to leader elections, configure information maintenance, and so on. In a distributed environment, we need a master instance or store some configuration information To ensure consistent file writing ...

&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp;     This section describes a simple example of programming using HDFs APIs. The following program can implement the following functions: In all files in the input file directory, retrieve the rows that appear in a particular string, and output the contents of those rows to the output folder of the local file system. This function in the analysis of mapre ...

Corporate Smartphone Security (C) - Aim at domain controllers and look for Golden Ticket. Before leaving the internal network, we decided to get the hash of the domain controller, especially the Kerberos account (krbtgt) and wanted to create a Golden Ticket *. Golden Ticket refers to the forged TGT (Ticket Granting Ticket). Similarly, the Silver Ticket is a forged TGS (Ticket Granting Server).

I. Build HADOOP development environment The various code that we have written in our work is run in the server, and the HDFS operation code is no exception. During the development phase, we used eclipse under Windows as the development environment to access the HDFs running in the virtual machine. That is, accessing HDFs in remote Linux through Java code in local eclipse. To access the HDFS in the client computer using Java code from the host, you need to ensure the following: (1) Ensure host and client ...

In the previous article, we learned more about SDS's work and operation process through SSDs Explorer. 　　In this article, we will explain in detail how to use the programmer's method to manipulate SDS. SDS provides SOAP and rest two kinds of interfaces, here we use rest+c# method to explain. 　　Soap is the same as it is, please check MSDN with interested students. Less gossip, let's take the example of creating authority, giving the "universal framework" of the rest Operation SDS: public s ...

Company Smartphone Security (a) - From APK to Golden Ticket: Initial Probing, Getting Domain Admin Access from an Android Smartphone, and More ... This article describes the potential dangers of using a personal smartphone in an enterprise network, These cases are typical after the actual case has occurred. It turns out that it is not difficult to trick an employee into installing a malicious application, bypassing network protection, accessing corporate networks, elevating and obtaining confidential information. In addition, it turns out that bypassing all protection mechanisms (including anti-virus software) without being discovered ...

http://www.aliyun.com/zixun/aggregation/13357.html ">azure VM Customized script extensions (Custom script Extension) will allow you to download from the storage account PowerShell script and execute it, with such a simple feature, you can flexibly automate VM settings in a variety of VM-customized contexts. In this article we will show you how to learn from ...

This paper is an excerpt from the book "The Authoritative Guide to Hadoop", published by Tsinghua University Press, which is the author of Tom White, the School of Data Science and engineering, East China Normal University. This book begins with the origins of Hadoop, and integrates theory and practice to introduce Hadoop as an ideal tool for high-performance processing of massive datasets. The book consists of 16 chapters, 3 appendices, covering topics including: Haddoop;mapreduce;hadoop Distributed file system; Hadoop I/O, MapReduce application Open ...