Hadoop-2.7.3环境下Hive-2.1.1安装配置。

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本文详细介绍在Ubuntu 16.0.4环境下Hive 2.1.1的安装步骤，包括解压、配置文件修改、MySQL驱动添加、环境变量设置等关键环节，并提供了hive-site.xml与hive-env.sh的具体配置示例。

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环境:ubuntu-16.0.4；jdk1.8.0_111;apache-hadoop-2.7.3;apache-hive-2.1.1。

这里只记录Hive的安装。Hive只需要安装到一个节点上即可。我这里是装在Namenode上的。

首先从官网上下载所需要的版本，本人下载的apache-hive-2.1.1-bin.tar.gz。放到用户主目录下面。

（1）解压：

$tar -zxvf apache-hive-2.1.1-bin.tar.gz

（2）进入到conf目录:

$cd apache-hive-2.1.1-bin/bin/conf

$ls

会看到有下面这些文件：

beeline-log4j2.properties.template hive-exec-log4j2.properties.template llap-cli-log4j2.properties.template
hive-default.xml.template hive-log4j2.properties.template llap-daemon-log4j2.properties.template
hive-env.sh.template ivysettings.xml parquet-logging.properties

然后在conf路径下，执行以下几个命令

$cp hive-default.xml.template hive-default.xml

$cp hive-env.sh.template hive-env.sh

$cp hive-default.xml hive-site.xml

（3）添加mysql驱动：

下载mysql-connector-java-x.y.z-bin.jar文件并放到apache-hive-2.1.1-bin/lib目录下面。

（4）设置路径及环境变量：

$sudo mv apache-hive-2.1.1-bin /usr/local/

$sudo vim /etc/profile

添加HIVE_HOME。

source /etc/profile

（5）修改hive-site.xml及hive-env.sh相关配置

将hive-site.xml文件中的内容修改为如下所示：

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
<configuration>
    <property>
        <name>hive.querylog.location</name>
        <value>/user/hivetmp</value>
        <description>Location of Hive run time structured log file</description>
    </property>
    <property>
        <name>hive.metastore.warehouse.dir</name>
        <value>/user/hive</value>
    </property>
    <property>  
        <name>javax.jdo.option.ConnectionURL</name>  
        <value>jdbc:mysql://192.168.244.3:3306/hive?createDatabaseIfNotExist=true&useSSL=false&useUnicode=true&characterEncoding=UTF-8</value>  
        <description>JDBC connect string for a JDBC metastore</description>      
    </property>     
    <property>   
        <name>javax.jdo.option.ConnectionDriverName</name>   
        <value>com.mysql.jdbc.Driver</value>   
        <description>Driver class name for a JDBC metastore</description>       
    </property>                 
  
    <property>   
        <name>javax.jdo.option.ConnectionUserName</name>  
        <value>hive</value>  
        <description>username to use against metastore database</description>  
    </property>  
    <property>    
        <name>javax.jdo.option.ConnectionPassword</name>  
        <value>123456</value>  
        <description>password to use against metastore database</description>    
    </property> 
    
    <property>  
        <name>hive.metastore.uris</name>  
        <value>thrift://192.168.244.3:9083</value>      
    </property>
    <property>
        <name>hive.metastore.local</name>
        <value>false</value>
    </property>
    <property>
        <name>hive.cli.print.header</name>
        <value>true</value>
    </property>


</configuration>

将hive-env.sh文件修改为如下所示：

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Set Hive and Hadoop environment variables here. These variables can be used
# to control the execution of Hive. It should be used by admins to configure
# the Hive installation (so that users do not have to set environment variables
# or set command line parameters to get correct behavior).
#
# The hive service being invoked (CLI/HWI etc.) is available via the environment
# variable SERVICE


# Hive Client memory usage can be an issue if a large number of clients
# are running at the same time. The flags below have been useful in 
# reducing memory usage:
#
# if [ "$SERVICE" = "cli" ]; then
#   if [ -z "$DEBUG" ]; then
#     export HADOOP_OPTS="$HADOOP_OPTS -XX:NewRatio=12 -Xms10m -XX:MaxHeapFreeRatio=40 -XX:MinHeapFreeRatio=15 -XX:+UseParNewGC -XX:-UseGCOverheadLimit"
#   else
#     export HADOOP_OPTS="$HADOOP_OPTS -XX:NewRatio=12 -Xms10m -XX:MaxHeapFreeRatio=40 -XX:MinHeapFreeRatio=15 -XX:-UseGCOverheadLimit"
#   fi
# fi

# The heap size of the jvm stared by hive shell script can be controlled via:
#
# export HADOOP_HEAPSIZE=1024
 export HADOOP_HEAPSIZE=1024
#
# Larger heap size may be required when running queries over large number of files or partitions. 
# By default hive shell scripts use a heap size of 256 (MB).  Larger heap size would also be 
# appropriate for hive server (hwi etc).


# Set HADOOP_HOME to point to a specific hadoop install directory
# HADOOP_HOME=${bin}/../../hadoop
 HADOOP_HOME=/usr/local/hadoop  #这里设置成自己的hadoop路径
# Hive Configuration Directory can be controlled by:
# export HIVE_CONF_DIR=
 export HIVE_CONF_DIR=/usr/local/apache-hive-2.1.1-bin/conf
# Folder containing extra ibraries required for hive compilation/execution can be controlled by:
# export HIVE_AUX_JARS_PATH=
export HIVE_AUX_JARS_PATH=/usr/local/apache-hive-2.1.1-bin/lib

（6）在mysql里创建hive用户，并赋予其足够权限

1.$mysql -u root -p

2.mysql> create user 'hive' identified by '123456';
Query OK, 0 rows affected (0.00 sec)

mysql> grant all privileges on *.* to 'hive' with grant option;
Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

（7）设置元数据库

$schematool -initSchema -dbType mysql