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Metadata Management

Updated on 2025-01-22 GMT+08:00

MRS provides multiple metadata storage methods. When deploying Hive and Ranger during MRS cluster creation, select one of the following storage modes as required:

  • Local: Metadata is stored in the local GaussDB of a cluster. When the cluster is deleted, the metadata is also deleted. To retain the metadata, manually back up the metadata in the database in advance.
  • External data connection: After the cluster is created, you can select RDS PostgreSQL database or RDS MySQL database that is associated with the same VPC and subnet as the current cluster. Metadata is stored in the associated database and is not deleted when the current cluster is deleted. Multiple MRS clusters can share the same metadata.
NOTE:

Hive in MRS 1.9.x or later allows you to specify a metadata storage method.

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