hadoop上hive的安装

1.前言

说明：安装hive前提是要先安装hadoop集群，并且hive只需要再hadoop的namenode节点集群里安装即可(需要再所有namenode上安装)，可以不在datanode节点的机器上安装。另外还需要说明的是，虽然修改配置文件并不需要你已经把hadoop跑起来，但是本文中用到了hadoop命令，在执行这些命令前你必须确保hadoop是在正常跑着的，而且启动hive的前提也是需要hadoop在正常跑着，所以建议你先将hadoop跑起来在按照本文操作。有关如何安装和启动hadoop集群。

hive 版本下载：hive-2.3.4/

下载 mysql-connector-java-5.1.46.jar

https://mvnrepository.com/artifact/mysql/mysql-connector-java/5.1.46

把包上传到/home/hadoop/hive

-rw-r--r--. 1 hadoop hadoop 232234292 Jan  6 06:49 apache-hive-2.3.4-bin.tar.gz
-rw-r--r--. 1 hadoop hadoop   1004838 Jan  6 06:49 mysql-connector-java-5.1.46.jar

解压：
tar -xvf apache-hive-2.3.4-bin.tar.gz

mv apache-hive-2.3.4-bin hive

然后把 mysql-connector-java-5.1.46.jar移动到hive2.3.4/lib下

把hive移动到/home/hadoop下

vi /etc/profile 添加下面
export HIVE_HOME=/home/hadoop/hive
export PATH=$PATH:$HIVE_HOME/bin
生效：
source  /etc/profile

修改hive配置文件
cp hive-env.sh.template hive-env.sh
cp hive-default.xml.template hive-site.xml
cp hive-log4j2.properties.template hive-log4j2.properties
cp hive-exec-log4j2.properties.template hive-exec-log4j2.properties

修改 hive-env.sh 文件添加：
export JAVA_HOME=/usr/local/jdk1.8
export HADOOP_HOME=/home/hadoop/hadoop-2.7.3
export HIVE_HOME=/home/hadoop/hive
export HIVE_CONF_DIR=/home/hadoop/hive/conf

在hdfs中创建目录，并授权，用于存储文件
启动hadoop
hdfs dfs -mkdir -p /user/hive/warehouse
hdfs dfs -mkdir -p /user/hive/tmp
hdfs dfs -mkdir -p /user/hive/log
hdfs dfs -chmod -R 777 /user/hive/warehouse
hdfs dfs -chmod -R 777 /user/hive/tmp
hdfs dfs -chmod -R 777 /user/hive/log

验证：
[hadoop@master conf]$ hdfs dfs -ls /user/hive
Found 3 items
drwxrwxrwx   - hadoop supergroup          0 2019-01-06 07:09 /user/hive/log
drwxrwxrwx   - hadoop supergroup          0 2019-01-06 07:09 /user/hive/tmp
drwxrwxrwx   - hadoop supergroup          0 2019-01-06 07:09 /user/hive/warehouse

修改hive-site.xml

<property>
    <name>hive.exec.scratchdir</name>
    <value>/user/hive/tmp</value>
</property>

<property>
    <name>hive.metastore.warehouse.dir</name>
    <value>/user/hive/warehouse</value>
</property>

<property>
    <name>hive.querylog.location</name>
    <value>/user/hive/log</value>
</property>

<property>
    <name>javax.jdo.option.ConnectionURL</name>
    <value>jdbc:mysql://localhost:3306/hive?createDatabaseIfNotExist=true&amp;characterEncoding=UTF-8&amp;useSSL=false</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>mysql</value>             --mysql 的密码
  </property>

创建 tmp 文件夹 ,并修改权限
mkdir -p /home/hadoop/apps/hive/tmp
chmod -R 777 /home/hadoop/apps/hive/tmp

将hive-site.xml文件中的${system:java.io.tmpdir}替换为hive的临时目录 /home/hadoop/apps/hive/tmp
把 {system:user.name} 改成 {user.name}

初始化：

[hadoop@master conf]$ schematool -dbType mysql -initSchema
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/home/hadoop/hive/lib/log4j-slf4j-impl-2.6..jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/hadoop/hadoop-2.7./share/hadoop/common/lib/slf4j-log4j12-1.7..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]
Metastore connection URL:     jdbc:mysql://localhost:3306/hive?createDatabaseIfNotExist=true&characterEncoding=UTF-8&useSSL=false
Metastore Connection Driver :     com.mysql.jdbc.Driver
Metastore connection User:     root

原因是jar重复导致，删除一个jar包

[hadoop@master tmp]$ cd /home/hadoop/hive/lib/
[hadoop@master lib]$ ll log4j-slf4j-impl-2.6.2.jar
-rw-r--r--. 1 hadoop hadoop 22927 Jan  6 06:57 log4j-slf4j-impl-2.6.2.jar
[hadoop@master lib]$ rm -rf log4j-slf4j-impl-2.6.2.jar

[hadoop@master conf]$ schematool -dbType mysql -initSchema
Metastore connection URL:     jdbc:mysql://localhost:3306/hive?createDatabaseIfNotExist=true&characterEncoding=UTF-8&useSSL=false
Metastore Connection Driver :     com.mysql.jdbc.Driver
Metastore connection User:     root
Starting metastore schema initialization to 2.3.0
Initialization script hive-schema-2.3.0.mysql.sql
Initialization script completed
schemaTool completed

启动hive方式一：

[hadoop@master conf]$ hive
which: no hbase in (/usr/local/jdk1./bin:/usr/local/jdk1./jre/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/hadoop/hive/bin:/home/hadoop/hadoop-2.7./sbin:/home/hadoop/hadoop-2.7./bin)

Logging initialized using configuration in file:/home/hadoop/hive/conf/hive-log4j2.properties Async: true
Hive-on-MR is deprecated in Hive  and may not be available in the future versions. Consider using a different execution engine (i.e. spark, tez) or using Hive .X releases.
hive> show database;

启动方式二：

使用 beeline
必须先对hadoop的core-site.xml进行配置，在文件里面添加并保存

<property>
  <name>hadoop.proxyuser.hadoop.groups</name>
  <value>*</value>
</property>
<property>
  <name>hadoop.proxyuser.hadoop.hosts</name>
  <value>*</value>
</property>
先启动 hiveserver2

[hadoop@master conf]$ hiveserver2
which: no hbase in (/usr/local/jdk1./bin:/usr/local/jdk1./jre/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/hadoop/hive/bin:/home/hadoop/hadoop-2.7./sbin:/home/hadoop/hadoop-2.7./bin)
-- ::: Starting HiveServer2

在启动

[hadoop@master hadoop]$ beeline
Beeline version 2.3. by Apache Hive
beeline> !connect jdbc:hive2://master:10000
Connecting to jdbc:hive2://master:10000
Enter username for jdbc:hive2://master:10000: hadoop
Enter password for jdbc:hive2://master:10000: ******
Connected to: Apache Hive (version 2.3.)
Driver: Hive JDBC (version 2.3.)
Transaction isolation: TRANSACTION_REPEATABLE_READ
: jdbc:hive2://master:10000> show databases;
+----------------+
| database_name  |
+----------------+
| default        |
+----------------+
 row selected (1.196 seconds)
: jdbc:hive2://master:10000> 

启动方式三 :Web UI

一、页面配置

[hadoop@master conf]$ vi hive-site.xml

<property>
    <name>hive.server2.webui.host</name>
    <value>192.168.1.30</value>  --主机IP
    <description>The host address the HiveServer2 WebUI will listen on</description>
  </property>
  <property>
    <name>hive.server2.webui.port</name>
    <value></value>
    <description>The port the HiveServer2 WebUI will listen on. This can beset to  or a negative integer to disable the web UI</description>
  </property>

二、切记，在修改完hive的hive-site.xml的配置之后，一定要重新启动HiveServer2服务

[hadoop@master conf]$ hive --service hiveserver2 &
[1] 3731
[hadoop@master conf]$ which: no hbase in (/usr/local/jdk1.8/bin:/usr/local/jdk1.8/jre/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/hadoop/hive/bin:/home/hadoop/hadoop-2.7.3/sbin:/home/hadoop/hadoop-2.7.3/bin)
2019-01-08 10:38:40: Starting HiveServer2

。。。。。。

三、在浏览器前台输入网址：http://192.168.1.30:10002/

[hadoop@master bin]$ beeline
Beeline version 2.3. by Apache Hive
beeline> !connect jdbc:hive2://master:10000 hadoop hadoop org.apache.hive.jdbc.HiveDriver
Connecting to jdbc:hive2://master:10000
Connected to: Apache Hive (version 2.3.)
Driver: Hive JDBC (version 2.3.)
Transaction isolation: TRANSACTION_REPEATABLE_READ
: jdbc:hive2://master:10000> show databases;
OK
+----------------+
| database_name  |
+----------------+
| db_hive        |
| default        |
+----------------+
 rows selected (1.555 seconds)
: jdbc:hive2://master:10000> use db_hive;
OK
No rows affected (0.153 seconds)
: jdbc:hive2://master:10000> show tables;
OK
+-----------+
| tab_name  |
+-----------+
| u2        |
| u4        |
+-----------+
 rows selected (0.159 seconds)
: jdbc:hive2://master:10000> select * from u2;
OK
+--------+----------+---------+-----------+---------+
| u2.id  | u2.name  | u2.age  | u2.month  | u2.day  |
+--------+----------+---------+-----------+---------+
|       | xm1      |       |          |       |
|       | xm2      |       |          |       |
|       | xm3      |       |          |       |
|       | xh4      |       |          |       |
|       | xh5      |       |          |       |
|       | xh6      |       |          |       |
|       | xh7      |       |          |       |
|       | xh8      |       |          |       |
|       | xh9      |       |          |       |
+--------+----------+---------+-----------+---------+
 rows selected (2.672 seconds)
: jdbc:hive2://master:10000>
 [hadoop@master bin]$ beeline -u jdbc:hive2://master:10000/default
Connecting to jdbc:hive2://master:10000/default
Connected to: Apache Hive (version 2.3.)
Driver: Hive JDBC (version 2.3.)
Transaction isolation: TRANSACTION_REPEATABLE_READ
Beeline version 2.3. by Apache Hive
: jdbc:hive2://master:10000/default> show databases;
OK
+----------------+
| database_name  |
+----------------+
| db_hive        |
| default        |
+----------------+
 rows selected (0.208 seconds)

完。。。