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Hbase入门
Hbase简介 Hbase 全称是Hadoop DataBase ,是一种开源的,可伸缩的,高可靠,高性能,面向列的分布式存储系统。 类似于Google的BigTable,其分布式计算采用MapReduce,通过MapReduce完成大块数据加载和全表扫描操作。文件存储系统是HDFS,通过Zookeeper来完成状态管理协同服务。不过BigTable只支持一级索引,而Hbase支持一级和二级索...
分类:其他好文   时间:2014-06-08 18:24:32    阅读次数:563
Binary Tree Zigzag Level Order Traversal
题目 Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and alternate between). For example: G...
分类:其他好文   时间:2014-06-08 17:29:07    阅读次数:315
linux上安装ORACLE_10.2.0提示缺少系统安装包libXp.so.6,调用jdk报错
今天在VWMARE上做了下Linux, oracle 的安装实验, 我系统环境配置: OS:Linux test 2.6.18-8.el5 #1 SMP Fri Jan 26 14:15:21 EST 2007 i686 i686 i386 GNU/Linux Database: 10201_database_linux32.iso 在安装ORACLE软件的时候突然出现如下的错误:...
分类:数据库   时间:2014-06-08 16:44:43    阅读次数:262
Binary Tree Level Order Traversal
题目  Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). For example: Given binary tree {3,9,20,#,#,15,7}, 3 / \...
分类:其他好文   时间:2014-06-08 16:38:02    阅读次数:194
Oracle用户及角色的权限管理[Oracle基础]
1.查看所有用户:   select * from dba_users;   select * from all_users;   select * from user_users; 2.查看用户或角色系统权限(直接赋值给用户或角色的系统权限):   select * from dba_sys_privs;   select * from user_sys_privs; 3.查看角色...
分类:数据库   时间:2014-06-08 16:25:50    阅读次数:229
[LeetCode]Distinct Subsequences,解题报告
题目 Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from the original string by deleting some (can be...
分类:其他好文   时间:2014-06-08 14:49:14    阅读次数:347
Maximum Depth of Binary Tree
题目 Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node. 方法 使用DFS对树进行遍...
分类:其他好文   时间:2014-06-08 10:26:33    阅读次数:207
MySql 安装及初级使用详解
1. sudo apt-get install mysql-server, input administrator password , '123' 2. enter mysql promot in command line, 'mysql -u root -p', input password 3. create database "CREATE DATABASE xoops...
分类:数据库   时间:2014-06-08 10:26:14    阅读次数:356
Binary Tree Level Order Traversal II
题目 Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root). For example: Given binary tree {3,9,20...
分类:其他好文   时间:2014-06-08 09:23:34    阅读次数:230
【oracle案例】ORA-01722
Oralce升级过程中,执行SQL> @?/rdbms/admin/catupgrd.sql脚本时, 遇到ORA-01722: invalid number报错, 导致报错的语句是 SELECT TO_NUMBER('DATA_VAULT_OPTION_ON') FROM v$option。 解决方法: 关闭Oracle Database Vault功能。...
分类:数据库   时间:2014-06-08 09:08:07    阅读次数:251
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