Hive On Tez

1、下载Tez

wget http://www-us.apache.org/dist/tez/0.9.2/apache-tez-0.9.2-bin.tar.gz

2、配置Tez

1）将$TEZ_HOME/share/tez.tar.gz 上传至HDFS：hdfs:///cdh5/apps/tez/tez.tar.gz。

hdfs dfs -mkdir -p /cdh5/apps/tez
hdfs dfs -put /opt/cloudera/tez-0.9.2/share/tez.tar.gz /cdh5/apps/tez

2）在$TEZ_HOME/conf下配置tez-site.xml：

<configuration>
	<property>
		<name>tez.lib.uris</name>
		<value>hdfs:///cdh5/apps/tez/tez.tar.gz</value>
	</property>
	<property>
		<name>tez.use.cluster.hadoop-libs</name>
		<value>true</value>
	</property>
	<property>
		<name>tez.runtime.compress</name>
		<value>true</value>
	</property>
	<property>
		<name>tez.runtime.compress.codec</name>
		<value>org.apache.hadoop.io.compress.SnappyCodec</value>
	</property>
</configuration>

将$TEZ_HOME/conf/tez-site.xml复制到所有结点的"$HADOOP_HOME/etc/hadoop"目录。 

3）配置Hive

$HIVE_HOME/conf/hive-env.sh，增加以下内容：

export TEZ_HOME=/opt/cloudera/tez
export TEZ_CONF_DIR=$TEZ_HOME/conf
export HADOOP_CLASSPATH=${TEZ_HOME}/*:${TEZ_HOME}/lib/*:${TEZ_CONF_DIR}:${HADOOP_CLASSPATH}

 $HIVE_HOME/conf/tez-site.xml，内容如下：

<?xml version="1.0"?>
<!--
       Licensed 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. See accompanying LICENSE file.
-->
 
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
 
<!-- Put site-specific property overrides in this file. -->
 
<configuration>
     <property>
         <name>tez.lib.uris</name>
         <value>hdfs:///cdh5/apps/tez/tez.tar.gz</value>
      </property>
</configuration>

  $HIVE_HOME/conf/hive-site.xml，修改如下：

<property>
	<name>hive.tez.container.size</name>
	<value>1024</value>
</property>
<property>
	<name>hive.tez.cpu.vcores</name>
	<value>2</value>
<property>
<property>
    <name>hive.execution.engine</name>
    <value>tez</value>
</property>
<property>
   <name>hive.prewarm.enabled</name>
   <value>true</value>
</property>
<property>
    <name>hadoop.embedded.local.mode</name>
    <value>false</value>
</property>

 4）环境变量（所有结点）

export TEZ_HOME=/opt/cloudera/tez
export TEZ_CONF_DIR=$TEZ_HOME/conf

$HADOOP_HOME/etc/hadoop/hadoop-env.sh设置"HADOOP_CLASSPATH"

export HADOOP_CLASSPATH=${TEZ_CONF_DIR}:${TEZ_HOME}/*:${TEZ_HOME}/lib/*:${HADOOP_CLASSPATH}

3、验证