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Considerations when using an external metastore

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Considerations when using an external metastore - Amazon EMR

  • You can configure databases that are compatible with MariaDB JDBC as your metastore. Examples of these databases are RDS for MariaDB, MySQL, and Amazon Aurora.

  • Metastores aren't auto-initialized. If your metastore isn't initialized with a schema for your Hive version, use the Hive Schema Tool.

  • EMR Serverless doesn't support Kerberos authentication. You can't use a thrift metastore server with Kerberos authentication with EMR Serverless Spark or Hive jobs.

  • You must configure VPC access to use the multi-catalog hierarchy.

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