Impala Prerequisites

To successfully install and run Impala, verify that the system meets the following hardware and software requirements:

Prerequisite Requirement
Operating System

MapR provides packages for the 64-bit operating systems listed in Operating System Support Matrix (MapR 6.x). For restrictions associated with a specific operating system or Impala version, see the support table for your MEP under MEP Components and OS Support.

MapR Software Version 5.2 and later
MEP repository Set up the MEP respository, if you have not already done so. For instructions on setting up the MEP repository, see Step 2: Prepare Packages and Repositories.
Hive Metastore

To use Impala for MapR, you must install and configure a Hive metastore. Configure the Hive metastore service and connect to a MySQL database through the service. For more information, see Installing Hive.

Note: Verify that hive-site.xml contains the hive.metastore.uris setting, and substitute the appropriate host name for metastore_server_host on every Impala server node.

Hive Hive 1.2 is required to run Impala 2.5.0. Earlier versions of Hive are not supported. If you have earlier versions of Hive installed, installing the Impala packages uninstalls Hive, except for the configuration logs and process identifiers, and updates the mapr-hive package with Hive 1.2. Impala must have access to the same metastore database that Hive uses. For Hive configuration information, see the Hive documentation.
MapR-DB MapR-DB binary tables (HBase 1.1.8 API) are required to run Impala. Install mapr-hbase-1.1.8 from the MEP repository.
Java JDK 1.7 or 1.8