HADOOP-HIVE学习笔记（3）- Beeline

REF: https://edu.hellobi.com/course/93/play/lesson/2033

 配置：

如果是多主机模式，那么bind.host 记得把localhost改成master

 知识点补充：

[root@bigdata conf]# ps -ef
UID         PID   PPID  C STIME TTY          TIME CMD
root          1      0  0 May15 ?        00:00:28 /usr/lib/systemd/systemd --switched-root --sy
root          2      0  0 May15 ?        00:00:00 [kthreadd]
root          3      2  0 May15 ?        00:00:00 [rcu_gp]

-f : To perform a full-format listing, add the -f or -F flag.

ps -e :Display every active process on a Linux system

[root@bigdata conf]# ps -ef |grep hive

Beeline：

beeline> !connect jdbc:hive2://localhost:10000/default
Connecting to jdbc:hive2://localhost:10000/default
Enter username for jdbc:hive2://localhost:10000/default: root
Enter password for jdbc:hive2://localhost:10000/default: *****
20/05/16 18:43:10 [main]: WARN jdbc.HiveConnection: Failed to connect to localhost:10000
Error: Could not open client transport with JDBC Uri: jdbc:hive2://localhost:10000/default: 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)

报错了。

beeline使用！quit退出。

beeline> !quit

报错，怎么解决？

先把hadoop停掉。

[root@bigdata lib]# $HADOOP_HOME/sbin/stop-all.sh

[root@bigdata lib]# cd $HADOOP_HOME/etc/hadoop/

[root@bigdata hadoop]# vim core-site.xml

 添加以下2个property。表示root用户可以代理所有主机上的所有用户。

<property>
  <name>hadoop.proxyuser.root.hosts</name>
  <value>*</value>
 </property>
 <property>
  <name>hadoop.proxyuser.root.groups</name>
  <value>*</value>
 </property>

重启：是否要scp slave1？没搞懂

[root@bigdata hadoop]# $HADOOP_HOME/sbin/start-all.sh

把hiveserver kill掉：

[root@bigdata hadoop]# ps -ef | grep hive
root 36386 15885 1 18:37 pts/1 00:00:22 /usr/java/jdk1.8.0_241-amd64/jre//bin/java -Xmx256m -Djava.net.preferIPv4Stack=true -Duser.timezone=GMT+08 -Dhadoop.log.dir=/home/admin/Downloads/hadoop-2.10.0/logs -Dhadoop.log.file=hadoop.log -Dhadoop.home.dir=/home/admin/Downloads/hadoop-2.10.0 -Dhadoop.id.str=root -Dhadoop.root.logger=INFO,console -Djava.library.path=/home/admin/Downloads/hadoop-2.10.0/lib/native -Dhadoop.policy.file=hadoop-policy.xml -Djava.net.preferIPv4Stack=true -Dproc_hiveserver2 -Dlog4j.configurationFile=hive-log4j2.properties -Djava.util.logging.config.file=/home/admin/Downloads/apache-hive-2.3.7/conf/parquet-logging.properties -Dhadoop.security.logger=INFO,NullAppender org.apache.hadoop.util.RunJar /home/admin/Downloads/apache-hive-2.3.7/lib/hive-service-2.3.7.jar org.apache.hive.service.server.HiveServer2
root 39811 24009 0 18:58 pts/5 00:00:00 grep --color=auto hive
[root@bigdata hadoop]# kill -9 36386

启动hiveserver2

[root@bigdata ~]# hiveserver2
which: no hbase in (/home/admin/Downloads/apache-hive-2.3.7/bin:/home/admin/Downloads/sqoop-1.4.7/bin:/user/java/latest/bin:/home/admin/Downloads/hadoop-2.10.0/bin:/usr/local/sbin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin)
2020-05-16 19:03:44: Starting HiveServer2
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/home/admin/Downloads/apache-hive-2.3.7/lib/log4j-slf4j-impl-2.6.2.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/admin/Downloads/hadoop-2.10.0/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]

我这里有点问题，一直卡在这里，感觉像无法启动hiveserver2. 但是看网友的文章，发现只要再打开一个Xshell窗口链接Beeline。

ref：https://blog.csdn.net/leanaoo/article/details/83351240

 hiveserver2的网页也能打开。

http://192.168.0.108:10002/

beeline> !connect jdbc:hive2://localhost:10000/default
Connecting to jdbc:hive2://localhost:10000/default
Enter username for jdbc:hive2://localhost:10000/default: root
Enter password for jdbc:hive2://localhost:10000/default: *****
Connected to: Apache Hive (version 2.3.7)
Driver: Hive JDBC (version 2.3.7)
Transaction isolation: TRANSACTION_REPEATABLE_READ
0: jdbc:hive2://localhost:10000/default> 

0: jdbc:hive2://localhost:10000/default> use hello;
No rows affected (0.233 seconds)
0: jdbc:hive2://localhost:10000/default> show tables;
+-----------+
| tab_name  |
+-----------+
| t2        |
| t3        |
+-----------+
2 rows selected (0.431 seconds)