java 插入數據到mysql 通過sqoop 導入到hive 中，kylin模擬見cube 時間和 數據膨脹率 kylin 數據插入到 HBase

Kylin

HBase 1.1.3

Hive 1.2.1

Hadoop 2.5.1

create table infoagetime( prod_name char(10), prod_id SMALLINT, ods_date DATE )
數據格式

oPmgBZxldW?? ?75?? ?2016-09-04
WSSAnnZrNy?? ?57?? ?2016-09-09

本人Java水平有限，大家自行改善，尤其是批量插入mysql語句

另工程中需要導入 mysql jar ：?? mysql-connector-java-5.1.6.jar

V2

package com.wubaiwan.instmysql;import java.io.File; import java.io.FileOutputStream; import java.sql.DriverManager; import java.util.Random;public class YiBaiWan {public static String getRandomString(int length) { // length表示生成字符串的長度String base = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";Random random = new Random();StringBuffer sb = new StringBuffer();for (int i = 0; i < length; i++) {int number = random.nextInt(base.length());sb.append(base.charAt(number));}return sb.toString();}public static final String url = "jdbc:mysql://192.168.184.168/hive2";public static final String name = "com.mysql.jdbc.Driver";public static final String user = "root";public static final String password = "123";public static java.sql.Connection conn = null;public static java.sql.PreparedStatement pst = null;static FileOutputStream out = null;public static void main(String args[]) {try {Class.forName(name);conn = DriverManager.getConnection(url, user, password);// 獲取連接conn.setAutoCommit(false);} catch (Exception e1) {// TODO Auto-generated catch blocke1.printStackTrace();} // 指定連接類型Random random = new Random();// int k = random.nextInt();// System.out.println(k);int x = 0;try {out = new FileOutputStream(new File("D:/mysql.txt"));String sql = "insert into infoagetime(prod_name,prod_id,ods_date) values(?,?,?)";// System.out.println(sql);pst = conn.prepareStatement(sql);while (x < 5000000) {// System.out.println((int)(Math.random()*100));// System.out.println(getRandomString(10) + ',' +// (int)(Math.random()*100));// String k = getRandomString(10) + ',' +// (int)(Math.random()*100 )+ ','+ "2016-09-0" +// (int)(random.nextInt(9)%9 + 1)+"\r\n" ;// System.out.println(k);// out.write(k.getBytes());pst.setString(1, getRandomString(10));pst.setInt(2, (int) (Math.random() * 100));pst.setString(3, "2016-09-0" + (int) (random.nextInt(9) % 9 + 1));pst.addBatch();if (x % 1000 == 0) {pst.executeBatch();//pst.executeUpdate(arg0)}x++;}System.out.println("Commit");pst.executeBatch();conn.commit();out.close();conn.close();pst.close();} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}finally{}}}

======================================

V1? 這個版本會有java memory 異常

package com.wubaiwan.instmysql;import java.io.File; import java.io.FileOutputStream; import java.sql.DriverManager; import java.util.Random;public class YiBaiWan { public static String getRandomString(int length) { //length表示生成字符串的長度 String base = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; Random random = new Random(); StringBuffer sb = new StringBuffer(); for (int i = 0; i < length; i++) { int number = random.nextInt(base.length()); sb.append(base.charAt(number)); } return sb.toString(); } public static final String url = "jdbc:mysql://192.168.184.168/hive2"; public static final String name = "com.mysql.jdbc.Driver"; public static final String user = "root"; public static final String password = "123"; public static java.sql.Connection conn = null; public static java.sql.PreparedStatement pst = null; public static void main(String args[]){ try {Class.forName(name);conn = DriverManager.getConnection(url, user, password);//獲取連接 } catch (Exception e1) {// TODO Auto-generated catch blocke1.printStackTrace();}//指定連接類型 FileOutputStream out = null; Random random = new Random(); //int k = random.nextInt(); //System.out.println(k); int x = 0; try { out = new FileOutputStream(new File("D:/mysql.txt")); while(x <5000000){ //System.out.println((int)(Math.random()*100)); //System.out.println(getRandomString(10) + ',' + (int)(Math.random()*100)); //String k = getRandomString(10) + ',' + (int)(Math.random()*100 )+ ','+ "2016-09-0" + (int)(random.nextInt(9)%9 + 1)+"\r\n" ; //System.out.println(k); //out.write(k.getBytes()); String sql = "insert into infoagetime(prod_name,prod_id,ods_date) values('"+getRandomString(10)+ "',"+(int)(Math.random()*100 )+","+ "'2016-09-0" + (int)(random.nextInt(9)%9 + 1) + "')" ;//System.out.println(sql);pst = conn.prepareStatement(sql); pst.executeUpdate(); if(x%10000 == 0 ) {System.out.println("Commit");conn.commit();}x++; } out.close(); conn.close(); pst.close(); }catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } }

轉載于:https://www.cnblogs.com/TendToBigData/p/10501376.html

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