[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://archive.cloudera.com/cdh5/redhat/7/x86_64/cdh/5/
gpgkey =https://archive.cloudera.com/cdh5/redhat/7/x86_64/cdh/RPM-GPG-KEY-cloudera
gpgcheck = 1
[cloudera-impala]
name=Impala
baseurl=http://archive.cloudera.com/impala/redhat/6/x86_64/impala/1/
gpgkey = http://archive.cloudera.com/impala/redhat/6/x86_64/impala/RPM-GPG-KEY-cloudera
gpgcheck = 1
we used this on our Centos 7 but it was for Centos 6 only
Refer this link
https://www.cloudera.com/documentation/enterprise/latest/topics/cdh_ig_cdh5_install.html#topic_4_4_1...
Hi above link for Centos 7
$ sudo yum install impala
$ sudo yum install impala-server
$ sudo yum install impala-state-store
$ sudo yum install impala-catalog