This test sometimes fails. I believe it's expected that DynamoDB doesn't have access to the credentials if they're embedded in the URL instead of the configuration (and IMO that's fine - since the functionality hasn't been in previous releases and since we want to discourage this practice especially now that there are better alternatives). Weirdly, I only sometimes get this failure on the
HADOOP-13345 branch. But if the problem turns out to be what I think it is, a simple Assume should fix it.