Help Center/ MapReduce Service/ User Guide (Kuala Lumpur Region)/ MRS Cluster Component Operation Gudie/ Using Hive/ Creating Databases and Creating Tables in the Default Database Only as the Hive Administrator
Updated on 2022-08-12 GMT+08:00
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Creating Databases and Creating Tables in the Default Database Only as the Hive Administrator

Scenario

This function is applicable to Hive and Spark2x for MRS 3.x or later, or Hive and Spark for versions earlier than MRS 3.x.

After this function is enabled, only the Hive administrator can create databases and tables in the default database. Other users can use the databases only after being authorized by the Hive administrator.

  • After this function is enabled, common users are not allowed to create a database or create a table in the default database. Based on the actual application scenario, determine whether to enable this function.
  • Permissions of common users are restricted. In the scenario where common users have been used to perform operations, such as database creation, table script migration, and metadata recreation in an earlier version of database, the users can perform such operations on the database in the condition that this function is disabled temporarily after the database is migrated or after the cluster is upgraded.

Procedure

  1. The Hive service configuration page is displayed.

    • For versions earlier than MRS 3.x, click the cluster name. On the cluster details page that is displayed, choose Components > Hive > Service Configuration, and select All from the Basic drop-down list.

      If the Components tab is unavailable, complete IAM user synchronization first. (On the Dashboard page, click Synchronize on the right side of IAM User Sync to synchronize IAM users.)

    • For MRS 3.x or later, log in to FusionInsight Manager. For details, see Accessing FusionInsight Manager (MRS 3.x or Later). And choose Cluster > Name of the desired cluster > Services > Hive > Configurations > All Configurations.

  2. Choose HiveServer(Role) > Customization, add a customized parameter to the hive-site.xml parameter file, set Name to hive.allow.only.admin.create, and set Value to true. Restart all Hive instances after the modification.
  3. Determine whether to enable this function on the Spark/Spark2x client.

    • If yes, go to 4.
    • If no, no further action is required.

  1. Choose SparkResource2x > Customization, add a customized parameter to the hive-site.xml parameter file, set Name to hive.allow.only.admin.create, and set Value to true. Then, choose JDBCServer2x > Customization and repeat the preceding operations to add the customized parameter. Restart all Spark2x instances after the modification.
  2. Download and install the Spark/Spark2x client again.
Parent topic: Using Hive