Help Center/ MapReduce Service/ Component Operation Guide (LTS) (Paris Region)/ Using HetuEngine/ HetuEngine Permission Management/ HetuEngine MetaStore-based Permission Control/ Configuring Permissions for Tables, Columns, and Databases
Updated on 2022-12-14 GMT+08:00
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Configuring Permissions for Tables, Columns, and Databases

If a user needs to access HetuEngine tables or databases created by other users, the user needs to be granted with related permissions. HetuEngine supports permission control based on columns for strict permission control. If a user needs to access some columns in tables created by other users, the user must be granted the permission for columns. The following describes how to grant table, column, and database permissions to users by using the role management function of Manager.

Procedure

The operations for granting permissions on HetuEngine tables, columns, and databases are the same as those for Hive.

  • Any permission for a table in the database is automatically associated with the HDFS permission for the database directory to facilitate permission management. When any permission for a table is canceled, the system does not automatically cancel the HDFS permission for the database directory to ensure performance. In this case, users can only log in to the database and view table names.
  • When the query permission on a database is added to or deleted from a role, the query permission on tables in the database is automatically added to or deleted from the role. This mechanism is inherited from Hive.
  • In HetuEngine, the name of a column of the struct type data cannot contain special characters, that is, characters other than letters, digits, and underscores (_). If the column name of the struct data type contains special characters, the column cannot be displayed on the FusionInsight Manager console when you grant permissions to roles on the Role page.

Concepts

Table 1 describes the permission requirements when SQL statements are processed in HetuEngine.

Table 1 Using HetuEngine tables, columns, or data

Scenario

Required Permission

DESCRIBE TABLE

Select

ANALYZE TABLE

Select and Insert

SHOW COLUMNS

Select

SHOW TABLE STATUS

Select

SHOW TABLE PROPERTIES

Select

SELECT

Select

NOTE:

To perform the SELECT operation on a view, you must have the Select permission on the view and the tables corresponding to the view.

EXPLAIN

Select

CREATE VIEW

Select, Grant Of Select, and Create

CREATE TABLE

Create

ALTER TABLE ADD PARTITION

Insert

INSERT

Insert

INSERT OVERWRITE

Insert and Delete

ALTER TABLE DROP PARTITION

The table-level Alter and Delete, and column-level Select permissions need to be granted.

ALTER DATABASE

Hive Admin Privilege