阿里巴巴集团战略思想与架构实战
淘宝平台“服务化”历程,分布式服务的框架。 共享服务平台的建设思路 双十一促销秒杀的缓存技术和高度使用
Oracle 11g DBA手册带目录 有安装配置的详细过程,也有Oracle管理以及高可用性的介绍使用。展示了如何实施新安装与软件升级,介绍了如何自动备份和恢复的过程。适合Oracle初学者与新手DBA
Oracle RAC最佳部署手册 环境Oracle_11G_R2_RAC_for_Linux. 技术解决方案以及实现过程,详细的步骤说明提供参考学习。
有视频教学与文档说明请珍惜使用 DHCP服务器配置综合实例 DNS服务器配置综合实例 FTP服务器配置综合实例 Linux网络配置综合实例 NFS服务器配置综合实例 Samba服务器配置综合实例 web服务器配置综合实例
第一部分 准备篇 第 1 章 环境准备 ····················································································································2 1.1 准备学习环境···················································································································2 1.1.1 基础软件下载 ·········································································································2 1.1.2 如何准备 Linux 环境·······························································································3 1.2 获取 Hadoop 源代码·········································································································5 1.3 搭建 Hadoop 源代码阅读环境 ··························································································5 1.3.1 创建 Hadoop 工程 ···································································································5 1.3.2 Hadoop 源代码阅读技巧·························································································8 1.4 Hadoop 源代码组织结构 ································································································10 1.5 Hadoop 初体验···············································································································12 1.5.1 搭建 Hadoop 环境 ·································································································12 1.5.2 Hadoop Shell 介绍 ································································································15VII 1.6 编译及调试 Hadoop 源代码····························································································16 1.6.1 编译 Hadoop 源代码 ·····························································································17 1.6.2 调试 Hadoop 源代码 ·····························································································18 1.7 小结 ·······························································································································20 第 2 章 YARN 设计理念与基本架构 ················································································21 2.1 YARN 产生背景 ·············································································································21 2.1.1 MRv1 的局限性 ····································································································21 2.1.2 轻量级弹性计算平台 ····························································································22 2.2 Hadoop 基础知识 ···········································································································23 2.2.1 术语解释···············································································································23 2.2.2 Hadoop 版本变迁 ··································································································25 2.3 YARN 基本设计思想······································································································29 2.3.1 基本框架对比 ·······································································································29 2.3.2 编程模型对比 ·······································································································30 2.4 YARN 基本架构·············································································································31 2.4.1 YARN 基本组成结构 ····························································································32 2.4.2 YARN 通信协议····································································································34 2.5 YARN 工作流程 ·············································································································35 2.6 多角度理解 YARN ·········································································································36 2.6.1 并行编程···············································································································36 2.6.2 资源管理系统 ·······································································································36 2.6.3 云计算 ··················································································································37 2.7 本书涉及内容·················································································································38 2.8 小结 ·······························································································································38 第二部分 YARN 核心设计篇
PHP初级程序员面试题目6份,包含答案 PHP面试题 姓名:____________ 日期:____________ 1.以下的代码会产生什么?为什么? $num =10; function multiply(){ $num =$num *10; } multiply(); echo $num; 10 2.有一个网页地址, http://www.phpres.com/index.html,如何得到它的内容? 方法1(对于PHP5及更高版本): $readcontents = fopen("http://www.phpres.com/index.html", "rb"); $contents = stream_get_contents($readcontents); fclose($readcontents); echo $contents; 方法2: echo file_get_contents("http://www.phpres.com/index.html"); 3.在PHP中error_reporting这个函数有什么作用? 设置PHP的报错级别并返回当前级别
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Linux操作系统中Oracle11g数据库安装规范 一 :数据库安装软件(含补丁)的下载说明 Oracle数据库安装软件获得途径: 1、可以通过ftp的方式上传至服务器 2、Oracle官方网站下载:(从11.2.0.2开始ORACLE不再提供升级patch,只提供完整的安装包) 二:数据库 Linux操作系统中Oracle11g数据库安装规范 一:数据库安装软件(含补丁)的下载说明 Oracle数据库安装软件获得途径: 1、可以通过ftp的方式上传至服务器 2、Oracle官方网站下载:(从11.2.0.2开始ORACLE不再提供升级patch,只提供完整的安装包) 二:数据库版本规定 本安装规范所针对的Oracle数据库版本为:Oracle 11.2.0.3.0 三:安装环境需求 1、系统硬件需求 系统必须满足下列最小硬件要求 内存需求 系统架构要求 磁盘空间需求 显示需求