1. Configuring Your Cluster for Hive View

Configuring HDFS for Hive

You need to set up an HDFS proxy user for the Ambari daemon account. For example, if ambari-server daemon is running as root, you set up a proxy user for root in core-site.xml by clicking HDFS > Configs > Custom core-site > Add Property. In the Add Property dialog box, you add the following keys and values:

Key	Value
`hadoop.proxyuser.root.groups`	`*`
`hadoop.proxyuser.root.hosts`	`*`

Ambari views use the doAs option for commands. This option enables the Ambari process user to impersonate the Ambari logged-in user. To avoid receiving permissions errors for job submissions and file save operations, you must create HDFS users for all Ambari users that use the views.

	Note
If Ambari Server is running as a non-root user, such as 'ambari', and you are planning on using Ambari Views, the following properties in Services > HDFS > Configs > Advanced core-site must be added: hadoop.proxyuser.ambari.groups=* hadoop.proxyuser.ambari.hosts=* See the Ambari Security Guide for more information about How to Configure Ambari Server for Non-Root.

Note

If Ambari Server is running as a non-root user, such as 'ambari', and you are planning on using Ambari Views, the following properties in Services > HDFS > Configs > Advanced core-site must be added:

hadoop.proxyuser.ambari.groups=*
hadoop.proxyuser.ambari.hosts=*

See the Ambari Security Guide for more information about How to Configure Ambari Server for Non-Root.

Note

	Note
This view stores user metadata in HDFS. By default, the location in HDFS for this metadata is `/user/<user name of logged in user>`. Since many users leverage the 'admin' account for getting started with Ambari, the `/user/admin` folder needs to be created. To do so execute the following commands as the hdfs user: su - hdfs hadoop fs -mkdir /user/admin hadoop fs -chown admin:hadoop /user/admin

This view stores user metadata in HDFS. By default, the location in HDFS for this metadata is /user/<user name of logged in user>. Since many users leverage the 'admin' account for getting started with Ambari, the /user/admin folder needs to be created. To do so execute the following commands as the hdfs user:

su - hdfs
hadoop fs -mkdir /user/admin
hadoop fs -chown admin:hadoop /user/admin

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