Hive3安装
Mysql安装
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卸载Centos7自带的mariadb
[root@node3 ~]# rpm -qa|grep mariadb mariadb-libs-5.5.64-1.el7.x86_64 [root@node3 ~]# rpm -e mariadb-libs-5.5.64-1.el7.x86_64 --nodeps [root@node3 ~]# rpm -qa|grep mariadb [root@node3 ~]#
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安装mysql
mkdir /export/software/mysql #上传mysql-5.7.29-1.el7.x86_64.rpm-bundle.tar 到上述文件夹下 解压 tar xvf mysql-5.7.29-1.el7.x86_64.rpm-bundle.tar #执行安装 yum -y install libaio [root@node3 mysql]# rpm -ivh mysql-community-common-5.7.29-1.el7.x86_64.rpm mysql-community-libs-5.7.29-1.el7.x86_64.rpm mysql-community-client-5.7.29-1.el7.x86_64.rpm mysql-community-server-5.7.29-1.el7.x86_64.rpm warning: mysql-community-common-5.7.29-1.el7.x86_64.rpm: Header V3 DSA/SHA1 Signature, key ID 5072e1f5: NOKEY Preparing... ################################# [100%] Updating / installing... 1:mysql-community-common-5.7.29-1.e################################# [ 25%] 2:mysql-community-libs-5.7.29-1.el7################################# [ 50%] 3:mysql-community-client-5.7.29-1.e################################# [ 75%] 4:mysql-community-server-5.7.29-1.e################ ( 49%)
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mysql初始化设置
#初始化 mysqld --initialize #更改所属组 chown mysql:mysql /var/lib/mysql -R #启动mysql systemctl start mysqld.service #查看生成的临时root密码 cat /var/log/mysqld.log [Note] A temporary password is generated for root@localhost: o+TU+KDOm004
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修改root密码 授权远程访问 设置开机自启动
[root@node2 ~]# mysql -u root -p Enter password: #这里输入在日志中生成的临时密码 Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 3 Server version: 5.7.29 Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> #更新root密码 设置为hadoop mysql> alter user user() identified by "hadoop"; Query OK, 0 rows affected (0.00 sec) #授权 mysql> use mysql; mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'hadoop' WITH GRANT OPTION; mysql> FLUSH PRIVILEGES; #mysql的启动和关闭 状态查看 (这几个命令必须记住) systemctl stop mysqld systemctl status mysqld systemctl start mysqld #建议设置为开机自启动服务 [root@node2 ~]# systemctl enable mysqld Created symlink from /etc/systemd/system/multi-user.target.wants/mysqld.service to /usr/lib/systemd/system/mysqld.service. #查看是否已经设置自启动成功 [root@node2 ~]# systemctl list-unit-files | grep mysqld mysqld.service enabled
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Centos7 干净卸载mysql 5.7
#关闭mysql服务 systemctl stop mysqld.service #查找安装mysql的rpm包 [root@node3 ~]# rpm -qa | grep -i mysql mysql-community-libs-5.7.29-1.el7.x86_64 mysql-community-common-5.7.29-1.el7.x86_64 mysql-community-client-5.7.29-1.el7.x86_64 mysql-community-server-5.7.29-1.el7.x86_64 #卸载 [root@node3 ~]# yum remove mysql-community-libs-5.7.29-1.el7.x86_64 mysql-community-common-5.7.29-1.el7.x86_64 mysql-community-client-5.7.29-1.el7.x86_64 mysql-community-server-5.7.29-1.el7.x86_64 #查看是否卸载干净 rpm -qa | grep -i mysql #查找mysql相关目录 删除 [root@node1 ~]# find / -name mysql /var/lib/mysql /var/lib/mysql/mysql /usr/share/mysql [root@node1 ~]# rm -rf /var/lib/mysql [root@node1 ~]# rm -rf /var/lib/mysql/mysql [root@node1 ~]# rm -rf /usr/share/mysql #删除默认配置 日志 rm -rf /etc/my.cnf rm -rf /var/log/mysqld.log
Hive的安装
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上传安装包 解压
tar zxvf apache-hive-3.1.2-bin.tar.gz
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解决Hive与Hadoop之间guava版本差异
cd /export/server/apache-hive-3.1.2-bin/ rm -rf lib/guava-19.0.jar cp /export/server/hadoop-3.3.0/share/hadoop/common/lib/guava-27.0-jre.jar ./lib/
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修改配置文件
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hive-env.sh
cd /export/server/apache-hive-3.1.2-bin/conf mv hive-env.sh.template hive-env.sh vim hive-env.sh export HADOOP_HOME=/export/server/hadoop-3.3.0 export HIVE_CONF_DIR=/export/server/apache-hive-3.1.2-bin/conf export HIVE_AUX_JARS_PATH=/export/server/apache-hive-3.1.2-bin/lib
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hive-site.xml
vim hive-site.xml
<configuration> <!-- 存储元数据mysql相关配置 --> <property> <name>javax.jdo.option.ConnectionURL</name> <value>jdbc:mysql://node1:3306/hive3?createDatabaseIfNotExist=true&useSSL=false&useUnicode=true&characterEncoding=UTF-8</value> </property> <property> <name>javax.jdo.option.ConnectionDriverName</name> <value>com.mysql.jdbc.Driver</value> </property> <property> <name>javax.jdo.option.ConnectionUserName</name> <value>root</value> </property> <property> <name>javax.jdo.option.ConnectionPassword</name> <value>hadoop</value> </property> <!-- H2S运行绑定host --> <property> <name>hive.server2.thrift.bind.host</name> <value>node1</value> </property> <!-- 远程模式部署metastore metastore地址 --> <property> <name>hive.metastore.uris</name> <value>thrift://node1:9083</value> </property> <!-- 关闭元数据存储授权 --> <property> <name>hive.metastore.event.db.notification.api.auth</name> <value>false</value> </property> </configuration>
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上传mysql jdbc驱动到hive安装包lib下
mysql-connector-java-5.1.32.jar
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初始化元数据
cd /export/server/apache-hive-3.1.2-bin/ bin/schematool -initSchema -dbType mysql -verbos #初始化成功会在mysql中创建74张表
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在hdfs创建hive存储目录(如存在则不用操作)
hadoop fs -mkdir /tmp hadoop fs -mkdir -p /user/hive/warehouse hadoop fs -chmod g+w /tmp hadoop fs -chmod g+w /user/hive/warehouse
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启动hive
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1、启动metastore服务
#前台启动 关闭ctrl+c /export/server/apache-hive-3.1.2-bin/bin/hive --service metastore #前台启动开启debug日志 /export/server/apache-hive-3.1.2-bin/bin/hive --service metastore --hiveconf hive.root.logger=DEBUG,console #后台启动 进程挂起 关闭使用jps+ kill -9 nohup /export/server/apache-hive-3.1.2-bin/bin/hive --service metastore &
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2、启动hiveserver2服务
nohup /export/server/apache-hive-3.1.2-bin/bin/hive --service hiveserver2 & #注意 启动hiveserver2需要一定的时间 不要启动之后立即beeline连接 可能连接不上
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3、beeline客户端连接
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拷贝node1安装包到beeline客户端机器上(node3)
scp -r /export/server/apache-hive-3.1.2-bin/ node3:/export/server/
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错误
Error: Could not open client transport with JDBC Uri: jdbc:hive2://node1:10000: Failed to open new session: java.lang.RuntimeException: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.authorize.AuthorizationException): User: root is not allowed to impersonate root (state=08S01,code=0)
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修改
在hadoop的配置文件core-site.xml中添加如下属性: <property> <name>hadoop.proxyuser.root.hosts</name> <value>*</value> </property>
hadoop.proxyuser.root.groups * -
连接访问
/export/server/apache-hive-3.1.2-bin/bin/beeline beeline> ! connect jdbc:hive2://node1:10000 beeline> root beeline> 直接回车
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错误解决:Hive3执行insert插入操作 statstask异常
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现象
在执行insert + values操作的时候 虽然最终执行成功,结果正确。但是在执行日志中会出现如下的错误信息。
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开启hiveserver2执行日志。查看详细信息
2020-11-09 00:37:48,963 WARN [5ce14c58-6b36-476a-bab8-89cba7dd1706 main] metastore.RetryingMetaStoreClient: MetaStoreClient lost connection. Attempting to reconnect (1 of 1) after 1s. setPartitionColumnStatistics ERROR [5ce14c58-6b36-476a-bab8-89cba7dd1706 main] exec.StatsTask: Failed to run stats task
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但是 此错误并不影响最终的插入语句执行成功。
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分析原因和解决
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statstask是一个hive中用于统计插入等操作的状态任务 其返回结果如下
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此信息类似于计数器 用于告知用户插入数据的相关信息 但是不影响程序的正常执行。
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Hive新版本中 这是一个issues 临时解决方式如下
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在mysql metastore中删除 PART_COL_STATS这张表即可。
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