一、ambari-server 执行
VERSION=`hdp-select status hadoop-client | sed 's/hadoop-client - [0−9]\.[0−9][0−9]\.[0−9].*/\1/'`
sudo git clone https://github.com/julyme/ambari-impala-service.git /var/lib/ambari-server/resources/stacks/HDP/$VERSION/services/IMPALA
二、所有服务器配置impala.repo
[cloudera-cdh5]
# Packages for Cloudera's Distribution for Hadoop, Version 5, on RedHat or CentOS 7 x86_64
name=Cloudera's Distribution for Hadoop, Version 5
baseurl=https://cloudera.proxy.ustclug.org/cdh5/redhat/7/x86_64/cdh/5/
gpgkey=https://cloudera.proxy.ustclug.org/cdh5/redhat/7/x86_64/cdh/RPM-GPG-KEY-cloudera
gpgcheck = 1
然后执行
yum clean all
yum list update
yum makecache
yum repolist
三、在ambari上添加impala服务，然后配置hdfs
hdfs增加配置
#HDFS config we need add below config to /etc/hadoop/conf/core-site.xml
<property>
<name>dfs.client.read.shortcircuit</name>
<value>true</value>
</property>
<property>
<name>dfs.client.read.shortcircuit.skip.checksum</name>
<value>false</value>
</property>
<property>
<name>dfs.datanode.hdfs-blocks-metadata.enabled</name>
<value>true</value>
</property>
we need add below config to /etc/hadoop/conf/hdfs-site.xml
<property>
<name>dfs.datanode.hdfs-blocks-metadata.enabled</name>
<value>true</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>60000</value>
</property>
四、安装后无法启动Impala，查看日志
cd /var/log/impala/
cat impala-state-store.log
通过命令查找
find / -name libjsig.so
/usr/local/java/jdk1.8.0_111/jre/lib/amd64/libjsig.so
/usr/local/java/jdk1.8.0_111/jre/lib/amd64/server/libjsig.so
猜测是JAVA_HOME问题
修改/etc/default/bigtop-utils
把其中的JAVA_HOME改正确
export JAVA_HOME=/usr/local/java/jdk1.8.0_111
