网站建设公司yu,自己建还是找代理建网站,网站防护怎么做,已经有域名 如何建设网站Hadoop 之 Hbase 配置与使用 一.Hbase 下载1.Hbase 下载 二.Hbase 配置1.单机部署2.伪集群部署#xff08;基于单机配置#xff09;3.集群部署1.启动 hadoop 集群2.启动 zookeeper 集群3.启动 hbase 集群4.集群启停脚本 三.测试1.Pom 配置2.Yml 配置3.Hbase 配置类4.Hbase 连… Hadoop 之 Hbase 配置与使用 一.Hbase 下载1.Hbase 下载 二.Hbase 配置1.单机部署2.伪集群部署基于单机配置3.集群部署1.启动 hadoop 集群2.启动 zookeeper 集群3.启动 hbase 集群4.集群启停脚本 三.测试1.Pom 配置2.Yml 配置3.Hbase 配置类4.Hbase 连接池配置5.测试类6.启动类7.测试 一.Hbase 下载
HBase 是一个分布式的、面向列的开源数据库Hbase API
1.Hbase 下载
Hbase 下载 跳转到下载链接 二.Hbase 配置
1.单机部署
## 1.创建安装目录
mkdir -p /usr/local/hbase
## 2.将压缩包拷贝到虚拟机并解压缩
tar zxvf hbase-3.0.0-alpha-4-bin.tar.gz -C /usr/local/hbase/
## 3.添加环境变量
echo export HBASE_HOME/usr/local/hbase/hbase-3.0.0-alpha-4 /etc/profile
echo export PATH${HBASE_HOME}/bin:${PATH} /etc/profile
source /etc/profile
## 4.指定 JDK 版本
echo export JAVA_HOME/usr/local/java/jdk-11.0.19 $HBASE_HOME/conf/hbase-env.sh
## 5.创建 hbase 存储目录
mkdir -p /home/hbase/data
## 6.修改配置
vim $HBASE_HOME/conf/hbase-site.xml添加如下信息propertynamehbase.rootdir/namevaluefile:///home/hbase/data/value/property## 1.进入安装目录
cd $HBASE_HOME
## 2.启动服务
./bin/start-hbase.sh## 1.进入安装目录
cd $HBASE_HOME
## 2.关闭服务
./bin/stop-hbase.sh2.伪集群部署基于单机配置
## 1.修改 hbase-env.sh
echo export JAVA_HOME/usr/local/java/jdk-11.0.19 $HBASE_HOME/conf/hbase-env.sh
echo export HBASE_MANAGES_ZKtrue $HBASE_HOME/conf/hbase-env.sh
## 2.修改 hbase_site.xml
vim $HBASE_HOME/conf/hbase-site.xml!-- 将 hbase 数据保存到 hdfs --propertynamehbase.rootdir/namevaluehdfs://nn/hbase/value/property!-- 分布式配置 --propertynamehbase.cluster.distributed/namevaluetrue/value/property!-- 配置 ZK 地址 --propertynamehbase.zookeeper.quorum/namevaluenn/value/property!-- 配置 JK 地址 --propertynamedfs.replication/namevalue1/value/property
## 3.修改 regionservers 的 localhost 为 nn
echo nn $HBASE_HOME/conf/regionservers## 1.进入安装目录
cd $HADOOP_HOME
## 2.启动 hadoop 服务
./sbin/start-all.sh## 1.进入安装目录
cd $HBASE_HOME
## 2.启动服务
./bin/start-hbase.sh## 1.进入安装目录
cd $HBASE_HOME
## 2.关闭主节点服务直接关服务是关不掉的如图
. bin/hbase-daemon.sh stop master
## 3.关闭服务
./bin/stop-hbase.sh3.集群部署
## 1.创建 zookeeper 数据目录
mkdir -p $HBASE_HOME/zookeeper/data
## 2.进入安装目录
cd $HBASE_HOME/conf
## 3.修改环境配置
vim hbase-env.sh
## 添加 JDK / 启动外置 Zookeeper# JDKexport JAVA_HOME/usr/local/java/jdk-11.0.19# Disable Zookeeperexport HBASE_MANAGES_ZKfalse
## 4.修改 hbase-site.xml
vim hbase-site.xml
## 配置如下信息!--允许的最大同步时钟偏移--propertynamehbase.master.maxclockskew/namevalue6000/value/property!--配置 HDFS 存储实例--propertynamehbase.rootdir/namevaluehdfs://nn:9000/hbase/value/property!--启用分布式配置--propertynamehbase.cluster.distributed/namevaluetrue/value/property!--配置 zookeeper 集群节点--propertynamehbase.zookeeper.quorum/namevaluezk1,zk2,zk3/value/property!--配置 zookeeper 数据目录--propertynamehbase.zookeeper.property.dataDir/namevalue/usr/local/hbase/hbase-3.0.0-alpha-4/zookeeper/data/value/property!-- Server is not running yet --propertynamehbase.wal.provider/namevaluefilesystem/value/property
## 5.清空 regionservers 并添加集群节点域名
echo regionservers
echo nn regionservers
echo nd1 regionservers
echo nd2 regionservers
## 6.分别为 nd1 / nd2 创建 hbase 目录
mkdir -p /usr/local/hbase
## 7.分发 hbase 配置到另外两台虚拟机 nd1 / nd2
scp -r /usr/local/hbase/hbase-3.0.0-alpha-4 rootnd1:/usr/local/hbase
scp -r /usr/local/hbase/hbase-3.0.0-alpha-4 rootnd2:/usr/local/hbase
## 8.分发环境变量配置
scp /etc/profile rootnd1:/etc/profile
scp /etc/profile rootnd2:/etc/profile1.启动 hadoop 集群
Hadoop 集群搭建参考Hadoop 搭建
## 1.启动 hadoop
cd $HADOOP_HOME
. sbin/start-all.sh## 1.关闭 hadoop 安全模式
hadoop dfsadmin -safemode leave2.启动 zookeeper 集群
ZOOKEEPER 集群搭建说明
## 1.启动 zookeeper 集群
zkServer.sh start ssh rootzk2 source /etc/profile zkServer.sh start exit ssh rootzk3 source /etc/profile zkServer.sh start exit
## 2.查看状态
zkServer.sh status ssh rootzk2 source /etc/profile zkServer.sh status exit ssh rootzk3 source /etc/profile zkServer.sh status exit3.启动 hbase 集群
## 1.分别为 nn /nd1 / nd2 配置 zookeeper 域名解析
echo 192.168.1.100 zk1 /etc/hosts
echo 192.168.1.101 zk2 /etc/hosts
echo 192.168.1.102 zk3 /etc/hosts
## 2.启动 habase
cd $HBASE_HOME
. bin/start-hbase.sh
## 3.停止服务
. bin/hbase-daemon.sh stop master
. bin/hbase-daemon.sh stop regionserver
. bin/stop-hbase.sh 查看 UI 监控http://192.168.1.6:16010/master-status 4.集群启停脚本
#!/bin/bashcase $1 in
start)## start hadoopstart-all.sh## start zookeeper (先配置免密登录)zkServer.sh start ssh rootzk2 source /etc/profile zkServer.sh start exit ssh rootzk3 source /etc/profile zkServer.sh start exit## start hbasestart-hbase.sh;;
stop)## stop hbasessh rootnd1 source /etc/profile hbase-daemon.sh stop regionserver stop-hbase.sh exitssh rootnd2 source /etc/profile hbase-daemon.sh stop regionserver stop-hbase.sh exithbase-daemon.sh stop master hbase-daemon.sh stop regionserver stop-hbase.sh## stop zookeeperzkServer.sh stop ssh rootzk2 source /etc/profile zkServer.sh stop exit ssh rootzk3 source /etc/profile zkServer.sh stop exit## stop hadoopstop-all.sh;;
*)echo pls inout start|stop;;
esac
三.测试
## 1.为 Windows 增加 Hosts 配置添加 Hbase 集群域名解析 编辑如下文件
C:\Windows\System32\drivers\etc\hosts
## 2.增加如下信息
192.168.1.6 nn
192.168.1.7 nd1
192.168.1.8 nd2测试配置效果 JDK 版本 工程结构 1.Pom 配置
?xml version1.0 encodingUTF-8?
project xmlnshttp://maven.apache.org/POM/4.0.0xmlns:xsihttp://www.w3.org/2001/XMLSchema-instancexsi:schemaLocationhttp://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsdmodelVersion4.0.0/modelVersiongroupIdorg.example/groupIdartifactIdhbase-demo/artifactIdversion1.0-SNAPSHOT/versionpropertiesmaven.compiler.source11/maven.compiler.sourcemaven.compiler.target11/maven.compiler.targetspring.version2.7.8/spring.versionproject.build.sourceEncodingUTF-8/project.build.sourceEncoding/propertiesdependenciesdependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-web/artifactIdversion${spring.version}/version/dependencydependencygroupIdorg.projectlombok/groupIdartifactIdlombok/artifactIdversion1.18.28/version/dependencydependencygroupIdcom.alibaba/groupIdartifactIdfastjson/artifactIdversion2.0.32/version/dependencydependencygroupIdorg.apache.hbase/groupIdartifactIdhbase-client/artifactIdversion3.0.0-alpha-4/version/dependency/dependencies/project2.Yml 配置
hbase:zookeeper:quorum: 192.168.1.100,192.168.1.101,192.168.1.102property:clientPort: 2181master:ip: 192.168.1.6port: 16000
3.Hbase 配置类
package org.example.config;import org.apache.hadoop.hbase.HBaseConfiguration;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;/*** author Administrator* Description* create 2023-07-25 0:26*/
Configuration
public class HbaseConfig {Value(${hbase.zookeeper.quorum})private String zookeeperQuorum;Value(${hbase.zookeeper.property.clientPort})private String clientPort;Value(${hbase.master.ip})private String ip;Value(${hbase.master.port})private int masterPort;Beanpublic org.apache.hadoop.conf.Configuration hbaseConfiguration(){org.apache.hadoop.conf.Configuration conf HBaseConfiguration.create();conf.set(hbase.zookeeper.quorum,zookeeperQuorum);conf.set(hbase.zookeeper.property.clientPort,clientPort);conf.set(hbase.masters, ip : masterPort);conf.set(hbase.client.keyvalue.maxsize,20971520);return HBaseConfiguration.create(conf);}}
4.Hbase 连接池配置
package org.example.config;import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.springframework.stereotype.Component;import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import java.util.Enumeration;
import java.util.Vector;/*** author Administrator* Description* create 2023-07-25 22:39*/
Slf4j
Component
public class HbaseConnectionPool {/*** 连接池的初始大小* 连接池的创建步长* 连接池最大的大小*/private int nInitConnectionAmount 3;private int nIncrConnectionAmount 3;private int nMaxConnections 20;/*** 存放连接池中数据库连接的向量*/private Vector vcConnections new Vector();/*** 注入连接配置*/Resourceprivate Configuration hbaseConfiguration;/*** 初始化连接*/PostConstructpublic void init() {createConnections(nInitConnectionAmount);}/*** 获取可用连接* return*/public synchronized Connection getConnection() {Connection conn;while (null (conn getFreeConnection())){try {wait(1000);} catch (InterruptedException e) {e.printStackTrace();}}// 返回获得的可用的连接return conn;}/*** 释放连接* param conn*/public synchronized void releaseConnection(Connection conn) {ConnectionWrapper connWrapper;Enumeration enumerate this.vcConnections.elements();while(enumerate.hasMoreElements()) {connWrapper (ConnectionWrapper) enumerate.nextElement();if (conn connWrapper.getConnection()) {connWrapper.setBusy(false);break;}}}/*** 获取可用连接 当前无可用连接则创建 如果已达到最大连接数则返回 null 阻塞后重试获取* return*/private Connection getFreeConnection() {Connection conn;if (null (conn findFreeConnection())) {// 创建新连接createConnections(nIncrConnectionAmount);// 查看是否有可用连接if (null (conn findFreeConnection())) {return null;}}return conn;}/*** 查找可用连接* return*/private Connection findFreeConnection() {ConnectionWrapper connWrapper;//遍历向量内连接对象Enumeration enumerate vcConnections.elements();while (enumerate.hasMoreElements()) {connWrapper (ConnectionWrapper) enumerate.nextElement();//判断当前连接是否被占用if (!connWrapper.isBusy()) {connWrapper.setBusy(true);return connWrapper.getConnection();}}// 返回 NULLreturn null;}/*** 创建新连接* param counts*/private void createConnections(int counts) {// 循环创建指定数目的数据库连接try {for (int i 0; i counts; i) {if (this.nMaxConnections 0 this.vcConnections.size() this.nMaxConnections) {log.warn(已达到最大连接数...);break;}// 创建一个新连接并加到向量vcConnections.addElement(new ConnectionWrapper(newConnection()));}} catch (Exception e) {log.error(创建连接失败...);}}/*** 创建新连接* return*/private Connection newConnection() {/** hbase 连接 */Connection conn null;// 创建一个数据库连接try {conn ConnectionFactory.createConnection(hbaseConfiguration);} catch (Exception e) {log.error(HBase 连接失败...);}// 返回创建的新的数据库连接return conn;}/*** 封装连接对象*/Dataclass ConnectionWrapper {/*** 数据库连接*/private Connection connection;/*** 此连接是否正在使用的标志默认没有正在使用*/private boolean busy false;/*** 构造函数根据一个 Connection 构告一个 PooledConnection 对象*/public ConnectionWrapper(Connection connection) {this.connection connection;}}}
5.测试类
package org.example.controller;import lombok.extern.slf4j.Slf4j;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.CompareOperator;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.filter.ColumnValueFilter;
import org.apache.hadoop.hbase.filter.Filter;
import org.apache.hadoop.hbase.util.Bytes;
import org.example.config.HbaseConnectionPool;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import javax.annotation.Resource;
import java.io.IOException;
import java.util.*;/*** author Administrator** 可利用 aop 进行连接获取和释放处理** Description* create 2023-07-25 23:06*/
Slf4j
RestController
RequestMapping(/hbase)
public class HbaseController {Resourceprivate HbaseConnectionPool pool;/*** 表名*/private String tbl_user tbl_user;/*** 创建表(不允许重复创建)*/GetMapping(/create)public void createTable(){Connection conn null;//获取连接try {conn pool.getConnection();Admin admin conn.getAdmin();TableName tableName TableName.valueOf(tbl_user);if (!admin.tableExists(tableName)){//指定表名TableDescriptorBuilder tdb_user TableDescriptorBuilder.newBuilder(tableName);//添加列族(info,data)ColumnFamilyDescriptor hcd_info ColumnFamilyDescriptorBuilder.of(name);ColumnFamilyDescriptor hcd_data ColumnFamilyDescriptorBuilder.of(age);tdb_user.setColumnFamily(hcd_info);tdb_user.setColumnFamily(hcd_data);//创建表TableDescriptor td tdb_user.build();admin.createTable(td);}} catch (IOException e) {throw new RuntimeException(e);} finally {if (null ! conn){pool.releaseConnection(conn);}}}/*** 删除表(不允许删除不存在的表)*/GetMapping(/drop)public void dropTable(){Connection conn null;try {conn pool.getConnection();Admin admin conn.getAdmin();TableName tableName TableName.valueOf(tbl_user);if (admin.tableExists(tableName)){admin.disableTable(tableName);admin.deleteTable(tableName);}} catch (IOException e) {throw new RuntimeException(e);} finally {if (null ! conn){pool.releaseConnection(conn);}}}/*** 插入测试*/GetMapping(/insert)public void insert(){log.info(---插入一列数据---1);putData(tbl_user, row1, name, a, zhangSan);putData(tbl_user, row1, age, a, 18);log.info(---插入多列数据---2);putData(tbl_user, row2, name,Arrays.asList(a, b, c), Arrays.asList(liSi, wangWu, zhaoLiu));log.info(---插入多列数据---3);putData(tbl_user, row3, age,Arrays.asList(a, b, c), Arrays.asList(18,19,20));log.info(---插入多列数据---4);putData(tbl_user, row4, age,Arrays.asList(a, b, c), Arrays.asList(30,19,20));}/*** 插入数据单条* param tableName 表名* param rowKey rowKey* param columnFamily 列族* param column 列* param value 值* return true/false*/public boolean putData(String tableName, String rowKey, String columnFamily, String column,String value) {return putData(tableName, rowKey, columnFamily, Arrays.asList(column),Arrays.asList(value));}/*** 插入数据批量* param tableName 表名* param rowKey rowKey* param columnFamily 列族* param columns 列* param values 值* return true/false*/public boolean putData(String tableName, String rowKey, String columnFamily,ListString columns, ListString values) {Connection conn null;try {conn pool.getConnection();Table table conn.getTable(TableName.valueOf(tableName));Put put new Put(Bytes.toBytes(rowKey));for (int i0; icolumns.size(); i) {put.addColumn(Bytes.toBytes(columnFamily), Bytes.toBytes(columns.get(i)), Bytes.toBytes(values.get(i)));}table.put(put);table.close();return true;} catch (IOException e) {e.printStackTrace();return false;} finally {if (null ! conn){pool.releaseConnection(conn);}}}/*** 查询测试*/GetMapping(/query)public void getResultScanner(){log.info(全表数据:{},getData(tbl_user));log.info(过滤器,按年龄 [18]:{},getData(tbl_user,new ColumnValueFilter(Bytes.toBytes(age), Bytes.toBytes(a), CompareOperator.EQUAL, Bytes.toBytes(18))));log.info(根据 rowKey [row1]:{},getData(tbl_user,row1));log.info(根据 rowKey 列族 列 [row2 name a]:{},getData(tbl_user,row2,name,a));}/*** 获取数据全表数据* param tableName 表名* return map*/public ListMapString, String getData(String tableName) {ListMapString, String list new ArrayList();Connection conn null;try {conn pool.getConnection();Table table conn.getTable(TableName.valueOf(tableName));Scan scan new Scan();ResultScanner resultScanner table.getScanner(scan);for(Result result : resultScanner) {HashMapString, String map new HashMap(result.listCells().size());map.put(row, Bytes.toString(result.getRow()));for (Cell cell : result.listCells()) {//列族String family Bytes.toString(cell.getFamilyArray(), cell.getFamilyOffset(), cell.getFamilyLength());//列String qualifier Bytes.toString(cell.getQualifierArray(), cell.getQualifierOffset(), cell.getQualifierLength());//值String data Bytes.toString(cell.getValueArray(), cell.getValueOffset(), cell.getValueLength());map.put(family : qualifier, data);}list.add(map);}table.close();} catch (IOException e) {e.printStackTrace();} finally {if (null ! conn){pool.releaseConnection(conn);}}return list;}/*** 获取数据根据 filter* param tableName 表名* param filter 过滤器* return map*/public ListMapString, String getData(String tableName, Filter filter) {ListMapString, String list new ArrayList();Connection conn null;try {conn pool.getConnection();Table table conn.getTable(TableName.valueOf(tableName));Scan scan new Scan();// 添加过滤器scan.setFilter(filter);ResultScanner resultScanner table.getScanner(scan);for(Result result : resultScanner) {HashMapString, String map new HashMap(result.listCells().size());map.put(row, Bytes.toString(result.getRow()));for (Cell cell : result.listCells()) {String family Bytes.toString(cell.getFamilyArray(), cell.getFamilyOffset(), cell.getFamilyLength());String qualifier Bytes.toString(cell.getQualifierArray(), cell.getQualifierOffset(), cell.getQualifierLength());String data Bytes.toString(cell.getValueArray(), cell.getValueOffset(), cell.getValueLength());map.put(family : qualifier, data);}list.add(map);}table.close();} catch (IOException e) {e.printStackTrace();} finally {if (null ! conn){pool.releaseConnection(conn);}}return list;}/*** 获取数据根据 rowKey* param tableName 表名* param rowKey rowKey* return map*/public MapString, String getData(String tableName, String rowKey) {HashMapString, String map new HashMap();Connection conn null;try {conn pool.getConnection();Table table conn.getTable(TableName.valueOf(tableName));Get get new Get(Bytes.toBytes(rowKey));Result result table.get(get);if (result ! null !result.isEmpty()) {for (Cell cell : result.listCells()) {String family Bytes.toString(cell.getFamilyArray(), cell.getFamilyOffset(), cell.getFamilyLength());String qualifier Bytes.toString(cell.getQualifierArray(), cell.getQualifierOffset(), cell.getQualifierLength());String data Bytes.toString(cell.getValueArray(), cell.getValueOffset(), cell.getValueLength());map.put(family : qualifier, data);}}table.close();} catch (IOException e) {e.printStackTrace();} finally {if (null ! conn){pool.releaseConnection(conn);}}return map;}/*** 获取数据根据 rowKey 列族 列* param tableName 表名* param rowKey rowKey* param columnFamily 列族* param columnQualifier 列* return map*/public String getData(String tableName, String rowKey, String columnFamily,String columnQualifier) {String data ;Connection conn null;try {conn pool.getConnection();Table table conn.getTable(TableName.valueOf(tableName));Get get new Get(Bytes.toBytes(rowKey));get.addColumn(Bytes.toBytes(columnFamily), Bytes.toBytes(columnQualifier));Result result table.get(get);if (result ! null !result.isEmpty()) {Cell cell result.listCells().get(0);data Bytes.toString(cell.getValueArray(), cell.getValueOffset(), cell.getValueLength());}table.close();} catch (IOException e) {e.printStackTrace();} finally {if (null ! conn){pool.releaseConnection(conn);}}return data;}/*** 删除数据*/GetMapping(/delete)public void delete(){log.info(---删除 rowKey --- row1 );deleteData(tbl_user,row1);log.info(---删除 rowKey 列族 --- row2 age );deleteData(tbl_user,row2,age);}/*** 删除数据根据 rowKey* param tableName 表名* param rowKey rowKey*/public void deleteData(String tableName, String rowKey) {Connection conn null;try {conn pool.getConnection();Table table conn.getTable(TableName.valueOf(tableName));Delete delete new Delete(Bytes.toBytes(rowKey));table.delete(delete);table.close();} catch (IOException e) {e.printStackTrace();} finally {if (null ! conn){pool.releaseConnection(conn);}}}/*** 删除数据根据 row key列族* param tableName 表名* param rowKey rowKey* param columnFamily 列族*/public void deleteData(String tableName, String rowKey, String columnFamily) {Connection conn null;try {conn pool.getConnection();Table table conn.getTable(TableName.valueOf(tableName));Delete delete new Delete(Bytes.toBytes(rowKey));delete.addFamily(columnFamily.getBytes());table.delete(delete);table.close();} catch (IOException e) {e.printStackTrace();} finally {if (null ! conn){pool.releaseConnection(conn);}}}}
6.启动类
package org.example;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;/*** author Administrator*/
SpringBootApplication
public class HbaseDemo {public static void main(String[] args) {SpringApplication.run(HbaseDemo.class,args);}
}7.测试
创建表http://127.0.0.1:8080/hbase/create
插入http://127.0.0.1:8080/hbase/insert
查询http://127.0.0.1:8080/hbase/query
删除http://127.0.0.1:8080/hbase/delete
删除表http://127.0.0.1:8080/hbase/drop查看 UI 测试输出日志
