MPPDB

1.MPPDB简介

MPP,它是一款 Shared Nothing 架构的分布式并行数据库集群,具备高性能、高可用、高扩展特性,可以为超大规模数据管理提供高性价比的通用计算平台,并广泛地用于支撑各类数据仓库系统、BI 系统和决策支持系统。

2.MPPDB技术特点

MPP 具备以下技术特征:
  1. 低硬件成本:完全使用 x86 架构的 PC Server,不需要昂贵的 Unix 服务器和磁盘阵列;
  1. 集群架构与部署:完全并行的 MPP + Shared Nothing 的分布式架构,采用 Non-Master 部署,节点对等的扁平结构;
  2. 海量数据分布压缩存储:可处理 PB 级别以上的结构化数据,采用 hash分布、random 存储策略进行数据存储;同时采用先进的压缩算法,减少存储数据所需的空间,可以将所用空间减少 1~20 倍,并相应地提高 I/O 性能;
  3. 数据加载高效性:基于策略的数据加载模式,集群整体加载速度可达2TB/h;
  4. 高扩展、高可靠:支持集群节点的扩容和缩容,支持全量、增量的备份/恢复;
  5. 高可用、易维护:数据通过副本提供冗余保护,自动故障探测和管理,自动同步元数据和业务数据。提供图形化工具,以简化管理员对数据库的管理工作;
  6. 高并发:读写不互斥,支持数据的边加载边查询,单个节点并发能力大于 300 用户;
  7. 行列混合存储:提供行列混合存储方案,从而提高了列存数据库特殊查询场景的查询响应耗时;
  8. 标准化:支持 SQL92 标准,支持 C API、ODBC、JDBC、ADO.NET 等接口规范。

3.MPPDB功能

功 能 描 述
结构化查询语言 符合 SQL 92 标准,支持 CREATE、ALTER、DROP 等 DDL 语法,支持 SELECT、INSERT、UPDATEDELETE、MERGE 等 DML 语法,支持单表,多表联合查询
数据类型 INT、TINYINT、SMALLINT、BIGINT、DECIMAL、FLOAT、DOUBLE
数值数据类型 CHAR、VARCHAR、TEXT 字符数据类型 DATE、TIME、DATETIME、TIMESTAMP 日期类型 BLOB 二进制数据类型
数据库对象 提供了数据库,表,索引,视图,存储过程,自定义函数等常用数据库对象的创建,修改和删除操作,支持数据库用户的创建,删除操作,以及用户权限的分配与回收
行列混合存储 基于创建的物理表,可以实现行存列的创建,修改和删除
图形化工具 提供了企业管理工具和集群监控工具。
接口 符合并支持 C API、ODBC、JDBC、ADO.NET 等接口规范
外围工具 提供数据加载、集群备份/恢复、数据重分布等外围工具

4.MPPDB架构

MPP 采用完全并行的 MPP + Shared Nothing 的分布式扁平架构,这种架构中的每一个节点(node)都是独立的、自给的、节点之间对等,而且整个系统中不存在单点瓶颈,具有非常强的扩展性。

MPPDB_第1张图片

下载驱动:https://pan.baidu.com/s/1sV4XZbbmYtC0pAO6tewMTg

5. demo

功能:将mysql中的数据表结构,自动在MPPDB中按照MPPDB语法批量创建表。

package com.epoint.HadoopAPIDemo;


import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;

public class MPPTestCreateTable {
	private static String MYSQLUSERNAME = "root";
	private static String MYSQLPASSWORD = "Gepoint";
	private static String MYSQLDRIVER = "com.mysql.jdbc.Driver";
	private static String MYSQLURL = "jdbc:mysql://100.2.5.221:3307/dep_fr_db";
	private static String MYSQLDATABASE = "dep_fr_db";
	

	private static String MPPDRIVER = "com.MPP.jdbc.Driver";
	private static String MPPURL = "jdbc:MPP://100.2.5.1:5258/";
	private static String MPPUSERNAME = "mpp";
	private static String MPPPASSWORD = "h3c";

	Connection mysqlconn = null;
	Statement mysqlpstm = null;
	ResultSet mysqlrs = null;

	Connection mppconn = null;
	Statement mppstm = null;
	ResultSet mpprs = null;

	String sql1 = " ";
	String sql2 = " ";
	String sql3 = " ";
	String sql4 = " ";
	String sql5 = " ";
	String sql6 = " ";

	public static void main(String[] args) throws Exception {
		MPPTestCreateTable aidth = new MPPTestCreateTable();
		aidth.getMYSQLConnection();
		aidth.MYSQLReleaseResource();
		aidth.getMPPConnection();
		aidth.MPPReleaseResource();
		aidth.CreateMPPTable();
//		aidth.ImportDataToMPP();
		System.out.println("程序已经执行完毕!请去waterdrop验证结果吧!!");
	}

	public void CreateMPPTable() {
		mysqlconn = getMYSQLConnection();
		mppconn = getMPPConnection();
		try {
			mppstm = mppconn.createStatement();
			mysqlpstm = mysqlconn.createStatement();
			int i = 0;
				String sql = "SELECT table_schema\r\n" + 
						"	,table_name\r\n" + 
						"	,(\r\n" + 
						"		CASE \r\n" + 
						"			WHEN ORDINAL_POSITION = mincol\r\n" + 
						"				AND ORDINAL_POSITION < maxcol\r\n" + 
						"				THEN CONCAT (\"create  table \"\r\n" + 
						"						,table_schema\r\n" + 
						"						,\".\"\r\n" + 
						"						,table_name\r\n" + 
						"						,\"(`\"\r\n" + 
						"						,column_name\r\n" + 
						"						,\"` \"\r\n" + 
						"						,COLUMN_TYPE\r\n" + 
						"						,\",\"\r\n" + 
						"						)\r\n" + 
						"			WHEN ORDINAL_POSITION = mincol\r\n" + 
						"				AND ORDINAL_POSITION = maxcol\r\n" + 
						"				THEN CONCAT (\"create  table \"\r\n" + 
						"						,table_schema\r\n" + 
						"						,\".\"\r\n" + 
						"						,table_name\r\n" + 
						"						,\"(`\"\r\n" + 
						"						,column_name\r\n" + 
						"						,\"` \"\r\n" + 
						"						,COLUMN_TYPE\r\n" + 
						"						,\");\"\r\n" + 
						"						)\r\n" + 
						"			WHEN ORDINAL_POSITION > mincol\r\n" + 
						"				AND ORDINAL_POSITION < maxcol\r\n" + 
						"				THEN CONCAT (\r\n" + 
						"						\"`\"\r\n" + 
						"						,column_name\r\n" + 
						"						,\"` \"\r\n" + 
						"						,COLUMN_TYPE\r\n" + 
						"						,\",\"\r\n" + 
						"						)\r\n" + 
						"			WHEN ORDINAL_POSITION = maxcol\r\n" + 
						"				THEN CONCAT (\r\n" + 
						"						\"`\"\r\n" + 
						"						,column_name\r\n" + 
						"						,\"` \"\r\n" + 
						"						,COLUMN_TYPE\r\n" + 
						"						,\");\"\r\n" + 
						"						)\r\n" + 
						"			END\r\n" + 
						"		) AS statement\r\n" + 
						"	,ORDINAL_POSITION\r\n" + 
						"	,maxcol\r\n" + 
						"	,mincol\r\n" + 
						"FROM (\r\n" + 
						"	SELECT b.table_schema,b.table_name,b.ORDINAL_POSITION,b.column_name,\r\n" + 
						"	(case\r\n" + 
						"	when column_type = 'timestamp' then 'datetime'\r\n" + 
						"	when column_type = 'bit(1)' then 'int(1)'\r\n" + 
						"	else\r\n" + 
						"		column_type\r\n" + 
						"	end ) AS column_type\r\n" + 
						"		,a.maxcol\r\n" + 
						"		,a.mincol\r\n" + 
						"	FROM (\r\n" + 
						"		SELECT table_schema\r\n" + 
						"			,table_name\r\n" + 
						"			,max(ORDINAL_POSITION) maxcol\r\n" + 
						"			,min(ORDINAL_POSITION) mincol\r\n" + 
						"		FROM information_schema.COLUMNS\r\n" + 
						"		GROUP BY table_schema\r\n" + 
						"			,table_name\r\n" + 
						"		) a\r\n" + 
						"	JOIN (\r\n" + 
						"		SELECT table_schema\r\n" + 
						"			,table_name\r\n" + 
						"			,ORDINAL_POSITION\r\n" + 
						"			,column_name\r\n" + 
						"			,COLUMN_TYPE\r\n" + 
						"		FROM information_schema.COLUMNS\r\n" + 
						"		ORDER BY table_schema\r\n" + 
						"			,table_name\r\n" + 
						"			,ORDINAL_POSITION ASC\r\n" + 
						"		) b ON a.table_schema = b.table_schema\r\n" + 
						"		AND a.table_name = b.table_name\r\n" + 
						"	) c\r\n" + 
						"WHERE table_schema = '"+MYSQLDATABASE+"'";
				mysqlrs = mysqlpstm.executeQuery(sql);
				while (mysqlrs.next()) {
					sql1 = mysqlrs.getString(3);
					sql2 = sql2 + sql1;
				}
			
			sql3 = "create database IF NOT EXISTS " + MYSQLDATABASE;
			mppstm.execute(sql3);
			System.out.println("-------------------建mpp表,表结构的语句为:" + sql2);
			String[] sqls=sql2.split(";");
			for (String m : sqls) {
				mppstm.execute(m);
			}
			System.out.println("----------------------------------------建mpp表已结束!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
			mppstm.close();
			mysqlpstm.close();
		} catch (SQLException e) {
			e.printStackTrace();
		} finally {
			MYSQLReleaseResource();
			MPPReleaseResource();
		}
	}

    public void ImportDataToMPP() {
        mysqlconn = getMYSQLConnection();
        mppconn = getMPPConnection();
        String sql = "select table_name from user_tables where num_rows > 0 order by table_name asc";
        int i = 0;
        try {
            mysqlpstm = mysqlconn.createStatement();
            mysqlrs = mysqlpstm.executeQuery(sql);
            mppstm = mppconn.createStatement();
            while (mysqlrs.next()) {
            	i = i + 1;
                String table_name = mysqlrs.getString("table_name").replaceAll("\\$", "");
                String sql7 = "insert into " + MYSQLDATABASE + "." + table_name + " select * from " + MYSQLDATABASE
                        + "_ex." + table_name;
                System.out.println("现在插入第"+i+"个表:"+sql7);
                mppstm.execute(sql7);
            }
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            MYSQLReleaseResource();
            MPPReleaseResource();
        }
    }
	
	public Connection getMYSQLConnection() {
		try {
			Class.forName(MYSQLDRIVER);
			mysqlconn = DriverManager.getConnection(MYSQLURL, MYSQLUSERNAME, MYSQLPASSWORD);
		} catch (ClassNotFoundException e) {
			throw new RuntimeException("class not find !", e);
		} catch (SQLException e) {
			throw new RuntimeException("get connection error!", e);
		}

		return mysqlconn;
	}

	public void MYSQLReleaseResource() {
		if (mysqlrs != null) {
			try {
				mysqlrs.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		if (mysqlpstm != null) {
			try {
				mysqlpstm.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		if (mysqlconn != null) {
			try {
				mysqlconn.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
	}

	public Connection getMPPConnection() {
		try {
			Class.forName(MPPDRIVER);
			mppconn = DriverManager.getConnection(MPPURL, MPPUSERNAME, MPPPASSWORD);
		} catch (ClassNotFoundException e) {
			throw new RuntimeException("class not find !", e);
		} catch (SQLException e) {
			throw new RuntimeException("get connection error!", e);
		}
		return mppconn;
	}

	public void MPPReleaseResource() {
		if (mpprs != null) {
			try {
				mpprs.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		if (mppstm != null) {
			try {
				mppstm.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		if (mppconn != null) {
			try {
				mppconn.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
	}
}

6. jdbc

package oa.epoint.com.mppdb;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

import com.MPP.jdbc.jdbc2.optional.MPPDataSource;

public class MPPTest {
	// JDBC连接串
		static String url = "jdbc:MPP://100.2.5.1:5258/";
		// mpp用户名
		static String user = "mpp";
		// mpp密码
		static String passwd = "h3c";

		public static void main(String args[]) {
			Connection conn = null;
			Statement st = null;
			ResultSet rs = null;
			try {
				Class.forName("com.MPP.jdbc.Driver");
				// 创建连接
				MPPDataSource ds = new MPPDataSource();
				ds.setUrl(url);
				ds.setUser(user);
				ds.setPassword(passwd);
				conn = ds.getConnection();
				System.out.println("MPP连接成功!");
				st = conn.createStatement();
	            //创建库
				st.execute("create database if not exists test;");
				System.out.println("创建数据库成功!");
				//使用库
				st.execute("use test;");
				System.out.println("使用数据库成功!");
				//创建表
				st.execute("create table if not exists test (id int,name varchar(20),age int);");
				System.out.println("创建表成功!");
				//插入数据
				st.execute("insert into test values(1,'test',15)");
				System.out.println("插入数据成功!");
				// 查询TEST表内容
				rs = st.executeQuery("SELECT * FROM test");
				System.out.println("查询数据成功,等待反馈结果!");
				while (rs.next()) {
					System.out.print(rs.getString(1));
					System.out.print("  ");
					System.out.println(rs.getString(2));
				}
				rs.close();
				st.close();
			} catch (Exception e) {
				e.printStackTrace();
			} finally {
				// 关闭连接
				if (conn != null) {
					try {
						conn.close();
						conn = null;
					} catch (Exception e) {
						e.printStackTrace();
					}
				}
			}
		}
	}
jdbc:MPP://100.2.5.2:5258/test?rewriteBatchedStatements=true
com.MPP.jdbc.Driver

MPPDB_第2张图片

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