Error: dynamodb scan missing values

Answered by Rafal Wilinski
What's Causing This Error
This error message indicates an issue with how the scan operation is used in a DynamoDB table. Specifically, it indicates that some expected values are missing in the scan results. This can happen if the scan operation is not executed correctly, the scan filter is not set up correctly, or the items being scanned do not contain the expected values.
Solution: Here's How To Resolve It
To solve this error, check the setup of the scan operation and ensure that it is executed correctly. For example, ensure that the scan filter is set up correctly and returns the expected values.
You can try to filter the scan results by using the FilterExpression
property, for example:
import boto3 # Instantiate a client dynamodb = boto3.client('dynamodb', region_name='us-west-2') # Define the parameters table_name = "my_table" scan_filter = "attribute1 = :val1" expression_attribute_values = { ":val1": {"S": "expected_value"} } # Perform the scan operation results = dynamodb.scan( TableName=table_name, FilterExpression=scan_filter, ExpressionAttributeValues=expression_attribute_values )
Other Common DynamoDB Errors (with Solutions)
- DynamoDB No Provisioned Throughput specified for the table
- dynamodb table did not stabilize
- localstack dynamodb not working
- DynamoDB validation error
- DynamoDB error 400
- dynamodb no range key value present
- DynamoDB is not showing all columns
- dynamodb unable to locate property for key attribute
- DynamoDB local error spawn java ENOENT
- dynamodb the parameter cannot be converted to a numeric value NaN
- DynamoDB delete fails
- a socket operation was attempted to an unreachable network dynamodb
- dynamodb index does not exist
- dynamodb update fail if not exists
- Unable to start DynamoDB Local process
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