1.安装环境

• CentOS Linux release 7.1.1503
• jdk1.7.0_67
• hadoop2.7.1
• hive1.2.1
• hbase1.0.1.1
• zookeeper3.4.6

2.集群各节点角色规划

• 192.168.200.118/namenode NameNode、SecondaryNameNode、ResourceManager、HBase、Hive metastore、Impala Catalog、Impala statestore、zookeeper
• 192.168.200.119/datanode1 DataNode、NodeManager、HBase、NodeManager、Impala Server、Impala shell、zookeeper
• 192.168.200.120/datanode2 DataNode、NodeManager、HBase、NodeManager、Impala Server、Impala shell、zookeeper
• 192.168.200.121/datanode3 DataNode、NodeManager、HBase、NodeManager、Impala Server、Impala shell、zookeeper

3.在namenode节点（本集群中规划的是namenode）上安装以下impala安装包，注意：以下安装包必须在root用户下执行。

　　rpm下载：http://archive.cloudera.com/cdh5/redhat/6/x86_64/cdh/5.5.2/RPMS/x86_64/

1. rpm -ivh --nodeps impala-2.3.0+cdh5.5.2+0-1.cdh5.5.2.p0.12.el6.x86_64.rpm
2. rpm -ivh impala-state-store-2.3.0+cdh5.5.2+0-1.cdh5.5.2.p0.12.el6.x86_64.rpm
3. rpm -ivh impala-catalog-2.3.0+cdh5.5.2+0-1.cdh5.5.2.p0.12.el6.x86_64.rpm
4. rpm -ivh impala-udf-devel-2.3.0+cdh5.5.2+0-1.cdh5.5.2.p0.12.el6.x86_64.rpm

4.在每一个datanode节点安装一下impala安装包，注意：以下安装包必须在root用户下执行。

1. rpm -ivh --nodeps --force impala-2.3.0+cdh5.5.2+0-1.cdh5.5.2.p0.12.el6.x86_64.rpm
2. rpm -ivh --nodeps --force impala-shell-2.3.0+cdh5.5.2+0-1.cdh5.5.2.p0.12.el6.x86_64.rpm
3. rpm -ivh --force impala-udf-devel-2.3.0+cdh5.5.2+0-1.cdh5.5.2.p0.12.el6.x86_64.rpm
4. rpm -ivh --force impala-server-2.3.0+cdh5.5.2+0-1.cdh5.5.2.p0.12.el6.x86_64.rpm

5.配置Impala

　　复制hadoop配置文件core-site.xml 、hbase-site.xml 、hdfs-site.xml 、hive-site.xml到/etc/impala/conf目录下

　　1、hdfs-site.xml添加配置

<property><name>dfs.client.read.shortcircuit</name><value>true</value>
</property><property><name>dfs.domain.socket.path</name><value>/var/run/hdfs-sockets/dn</value>
</property><property><name>dfs.client.file-block-storage-locations.timeout.millis</name><value>10000</value>
</property>

　　2、core-site.xml添加配置

<property><name>dfs.client.read.shortcircuit</name><value>true</value>
</property>

　　3、每个datanode的hdfs-site.xml添加配置

<property><name>dfs.client.use.legacy.blockreader.local</name><value>true</value>
</property><property><name>dfs.datanode.data.dir.perm</name><value>750</value>
</property><property><name>dfs.block.local-path-access.user</name><value>impala</value>
</property><property><name>dfs.client.file-block-storage-locations.timeout.millis</name><value>10000</value>
</property>

6、修改/usr/lib/impala/lib下的impala相关jar包

impala安装后hadoop相关jar包大多找不到，修改/usr/lib/impala/lib下的相关jar包，cdh5.5.2下我替换的jar包使用软连接仍然找不到，复制过去可以，复制过去的jar包必须改名为/usr/lib/impala/lib原来的jar包名称