boto/boto — Issue #590: DynamoDB SerializationException/400 Error
Author: rdodev
Created: 2012-02-21 20:21:49+00:00
State: open

Version: latest production version
Description: executing code as shown below on a table containing a few thousand items

for item in table.scan():
print(item['attr_name'])

leads to the following error:

boto.exception.DynamoDBResponseError: DynamoDBResponseError: 400 Bad Request
{u'Message': u'Expected null', u'__type': u'com.amazon.coral.service#SerializationException'}