![]() ![]() Redshift Spectrum doesn't support enhanced VPC routing with provisioned clusters. The Amazon Redshift cluster and the Amazon S3 bucket must be in the same AWS Region. For more information about AWS Glue Data Catalog encryption, seeĮncrypting Your AWS Glue Data Catalog in the AWS Glue Developer Guide. Supported AWS Regions, see Encryption and Secure Access for AWS Glue in the AWS Glue Developer Guide. AWS Glue catalog encryption is not available in all AWS Regions. If theĪWS Glue catalog is encrypted, you need the AWS Key Management Service (AWS KMS) key for AWS Glue to access theĪWS Glue catalog. The AWS Glue Data Catalog that you access might be encrypted to increase security. When you update Amazon S3 data files, theĭata is immediately available for query from any of your Amazon Redshift clusters. You can add Redshift Spectrum tables to multiple Amazon Redshift clusters and query the sameĭata on Amazon S3 from any cluster in the same AWS Region. ![]() Redshift Spectrum doesn't support update operations on external Just as you do any other Amazon Redshift table. The improvement occursīecause the Amazon Redshift query optimizer eliminates partitions that don't contain data for theĪfter your Redshift Spectrum tables have been defined, you can query and join the tables Partitions as part of the external table can improve performance. Optionally, you can partition the external tables on one or more columns. Changes to the externalĭata catalog are immediately available to any of your Amazon Redshift clusters. Using any other tool that connects to the external data catalog. Manage external tables either from Amazon Redshift using data definition language (DDL) commands or The external data catalog can be AWS Glue, the dataĬatalog that comes with Amazon Athena, or your own Apache Hive metastore. ![]() You create Redshift Spectrum tables by defining the structure for your files and registering them as Potentially use thousands of instances to take advantage of massively parallel Based on the demands of your queries, Redshift Spectrum can Less of your cluster's processing capacity than other queries. Tutorial: Querying nested data with Amazon RedshiftĪmazon Redshift Spectrum resides on dedicated Amazon Redshift servers that are independent of your cluster.Īmazon Redshift pushes many compute-intensive tasks, such as predicate filtering andĪggregation, down to the Redshift Spectrum layer.Troubleshooting queries in Amazon Redshift.Monitoring metrics in Amazon Redshift Spectrum.Example: Performing correlated subqueries in Redshift Spectrum.Improving Amazon Redshift Spectrum query.Creating external tables for Redshift Spectrum.Creating external schemas for Amazon Redshift.Creating data files for queries in Amazon Redshift.Using Redshift Spectrum with AWS Lake Formation.IAM policies for Amazon Redshift Spectrum. ![]()
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