Hadoop3集群搭建之——hive安装 Hadoop3集群搭建之——配置ntp服务

现在到hive了。

hive安装比较简单。

下载个包，解压，配置hive-site.xml、hive-env.sh 就好了。

1、下载hive包

　　官网：http://mirror.bit.edu.cn/apache/hive/hive-2.3.3/

2、解压到hadoop目录　　

tar -zxvf apache-hive-2.3.3-bin.tar.gz  #解压
mv apache-hive-2.3.3-bin hive2.3.3  #修改目录名，方便使用

3、配置hive环境变量　　

[hadoop@venn05 ~]$ more .bashrc 
# .bashrc

# Source global definitions
if [ -f /etc/bashrc ]; then
    . /etc/bashrc
fi

# Uncomment the following line if you don't like systemctl's auto-paging feature:
# export SYSTEMD_PAGER=

# User specific aliases and functions
#jdk
export JAVA_HOME=/opt/hadoop/jdk1.8
export JRE_HOME=${JAVA_HOME}/jre
export CLASS_PATH=${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH


#hadoop
export HADOOP_HOME=/opt/hadoop/hadoop3
export PATH=$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$PATH

#hive
export HIVE_HOME=/opt/hadoop/hive2.3.3
export HIVE_CONF_DIR=$HIVE_HOME/conf
export PATH=$HIVE_HOME/bin:$PATH

4、在hdfs上创建hive目录　　

hive工作目录如下：　　

<property>
    <name>hive.metastore.warehouse.dir</name>
    <value>/user/hive/warehouse</value>
    <description>location of default database for the warehouse</description>
  </property>
<property>
    <name>hive.exec.scratchdir</name>
    <value>/tmp/hive</value>
    <description>HDFS root scratch dir for Hive jobs which gets created with write all (733) permission. For each connecting user, an HDFS scratch dir: ${hive.exec.scratchdir}/&lt;username&gt; is created, with ${hive.scratch.dir.permission}.</description>
  </property>

所以创建如下目录：

hadoop fs -mkdir -p /user/hive/warehouse #hive库文件位置
hadoop fs -mkdir -p /tmp/hive/ #hive临时目录

#授权
hadoop fs -chmod -R 777 /user/hive/warehouse
hadoop fs -chmod -R 777 /tmp/hive

注：必须授权，不然会报错：　　

Logging initialized using configuration in jar:file:/opt/hadoop/hive2.3.3/lib/hive-common-2.3.3.jar!/hive-log4j2.properties Async: true
Exception in thread "main" java.lang.RuntimeException: The root scratch dir: /tmp/hive on HDFS should be writable. Current permissions are: rwxr-xr-x
    at org.apache.hadoop.hive.ql.session.SessionState.createRootHDFSDir(SessionState.java:720)
    at org.apache.hadoop.hive.ql.session.SessionState.createSessionDirs(SessionState.java:650)
    at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:582)
    at org.apache.hadoop.hive.ql.session.SessionState.beginStart(SessionState.java:549)
    at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:750)
    at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:686)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.apache.hadoop.util.RunJar.run(RunJar.java:239)
at org.apache.hadoop.util.RunJar.main(RunJar.java:153)

5、修改hive-site.xml　　

cp hive-default.xml.template hive-site.xml
vim hive-site.xml

修改1：将hive-site.xml 中的 “${system:java.io.tmpdir}” 都缓存具体目录：/opt/hadoop/hive2.3.3/tmp 4处

修改2：将hive-site.xml 中的 “${system:user.name}” 都缓存具体目录：root 3处

<property>
    <name>hive.exec.local.scratchdir</name>
    <value>${system:java.io.tmpdir}/${system:user.name}</value>
    <description>Local scratch space for Hive jobs</description>
  </property>
  <property>
    <name>hive.downloaded.resources.dir</name>
    <value>${system:java.io.tmpdir}/${hive.session.id}_resources</value>
    <description>Temporary local directory for added resources in the remote file system.</description>
  </property>
<property>
    <name>hive.querylog.location</name>
    <value>${system:java.io.tmpdir}/${system:user.name}</value>
    <description>Location of Hive run time structured log file</description>
  </property>
<property>
    <name>hive.server2.logging.operation.log.location</name>
    <value>${system:java.io.tmpdir}/${system:user.name}/operation_logs</value>
    <description>Top level directory where operation logs are stored if logging functionality is enabled</description>
  </property>

改为：

<property>
    <name>hive.exec.local.scratchdir</name>
    <value>/opt/hadoop/hive2.3.3/tmp/root</value>
    <description>Local scratch space for Hive jobs</description>
  </property>
  <property>
    <name>hive.downloaded.resources.dir</name>  
　　<value>/opt/hadoop/hive2.3.3/tmp/${hive.session.id}_resources</value>
    <description>Temporary local directory for added resources in the remote file system.</description>
  </property>
<property>
    <name>hive.querylog.location</name>
    <value>/opt/hadoop/hive2.3.3/tmp/root</value>
    <description>Location of Hive run time structured log file</description>
  </property>
<property>
    <name>hive.server2.logging.operation.log.location</name>
    <value>/opt/hadoop/hive2.3.3/tmp/root/operation_logs</value>
    <description>Top level directory where operation logs are stored if logging functionality is enabled</description>

配置元数据库mysql：

mysql> CREATE USER 'hive'@'%' IDENTIFIED BY 'hive';  #创建hive用户
Query OK, 0 rows affected (0.00 sec)

mysql> GRANT ALL ON *.* TO 'hive'@'%';  #授权
Query OK, 0 rows affected (0.00 sec)

修改数据库配置：

<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.ConnectionURL</name>
<value>jdbc:mysql://venn05:3306/hive?createDatabaseIfNotExist=true</value>
<description>
JDBC connect string for a JDBC metastore.
To use SSL to encrypt/authenticate the connection, provide database-specific SSL flag in the connection URL.
For example, jdbc:postgresql://myhost/db?ssl=true for postgres database.
</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>hive</value>
<description>password to use against metastore database</description>
</property>

6、修改hive-env.sh　　

cp hive-env.sh.template hive-env.sh
vim hive-env.sh

在末尾添加如下内容：　　

export HADOOP_HOME=/opt/hadoop/hadoop3
export HIVE_CONF_DIR=/opt/hadoop/hive2.3.3/conf
export HIVE_AUX_JARS_PATH=/opt/hadoop/hive2.3.3/lib

7、上传mysql驱动包

上传到：$HIVE_HOME/lib

8、初始化hive　　

schematool -initSchema -dbType mysql

9、启动hive

hive

搞定

Hadoop3集群搭建之——hive安装 Hadoop3集群搭建之——配置ntp服务

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