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============================ Amazon DynamoDB to Amazon S3

Use the DynamoDBToS3Operator transfer to copy the content of an existing Amazon DynamoDB table to an existing Amazon Simple Storage Service (S3) bucket.

Prerequisite Tasks

.. include:: ../_partials/prerequisite_tasks.rst

Operators

.. _howto/transfer:DynamoDBToS3Operator:

Amazon DynamoDB To Amazon S3 transfer operator

This operator replicates records from an Amazon DynamoDB table to a file in an Amazon S3 bucket. It scans an Amazon DynamoDB table and writes the received records to a file on the local filesystem. It flushes the file to Amazon S3 once the file size exceeds the file size limit specified by the user.

Users can also specify a filtering criteria using dynamodb_scan_kwargs to only replicate records that satisfy the criteria.

To get more information visit: :class:~airflow.providers.amazon.aws.transfers.dynamodb_to_s3.DynamoDBToS3Operator

Example usage:

.. exampleinclude:: /../../amazon/tests/system/amazon/aws/example_dynamodb_to_s3.py :language: python :dedent: 4 :start-after: [START howto_transfer_dynamodb_to_s3] :end-before: [END howto_transfer_dynamodb_to_s3]

To parallelize the replication, users can create multiple DynamoDBToS3Operator tasks using the TotalSegments parameter. For instance to replicate with parallelism of 2, create two tasks:

.. exampleinclude:: /../../amazon/tests/system/amazon/aws/example_dynamodb_to_s3.py :language: python :dedent: 4 :start-after: [START howto_transfer_dynamodb_to_s3_segmented] :end-before: [END howto_transfer_dynamodb_to_s3_segmented]

Users can also pass in point_in_time_export boolean param to DynamoDBToS3Operator to recover data from a point in time.

Full export example usage:

.. exampleinclude:: /../../amazon/tests/system/amazon/aws/example_dynamodb_to_s3.py :language: python :dedent: 4 :start-after: [START howto_transfer_dynamodb_to_s3_in_some_point_in_time_full_export] :end-before: [END howto_transfer_dynamodb_to_s3_in_some_point_in_time_full_export]

Incremental export example usage:

.. exampleinclude:: /../../amazon/tests/system/amazon/aws/example_dynamodb_to_s3.py :language: python :dedent: 4 :start-after: [START howto_transfer_dynamodb_to_s3_in_some_point_in_time_incremental_export] :end-before: [END howto_transfer_dynamodb_to_s3_in_some_point_in_time_incremental_export]

Reference

• AWS boto3 library documentation for Amazon DynamoDB <https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/dynamodb.html>__
• AWS boto3 library documentation for Amazon S3 <https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/s3.html>__