Error: DynamoDB scan does not return all items

Rafal Wilinski

Answered by Rafal Wilinski

What's Causing This Error

  • This error can be caused by a variety of issues, such as:
  • Incorrect filter conditions specified in the scan request.
  • The scan request is only returning a subset of the items due to the limit parameter specified.
  • The table has a large number of items, and the scan request is taking longer than expected.
  • Issues with the IAM role associated with the request.
  • Errors with the scan function or the SDK being used.

Solution: Here's How To Resolve It

To solve this error, you can take the following steps:

  • Double-check the filter conditions specified in the scan request to ensure they correctly filter the desired items.
  • Check if the limit parameter is specified in the scan request and increase the limit if necessary to return all the items.
  • If the table has many items, you can use the pagination feature provided by the scan function to retrieve all the items in smaller chunks.
  • Check the IAM role associated with the request to ensure it has the necessary permissions to read the table.
  • Verify that the scan function or SDK being used is configured correctly and that all necessary dependencies are installed.
  • If the issue persists, you may contact AWS support for further assistance.
  • Additionally, you can use DynamoDB Streams and Lambda functions to handle error handling and retries more efficiently.
  • Monitor your CloudWatch metrics for the DynamoDB table to see if you are exceeding the read and write capacity units.

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