Technically what is the difference between s3n, s3a and s3?

The letter change on the URI scheme makes a big difference because it causes different software to be used to interface to S3. Somewhat like the difference between http and https – it’s only a one-letter change, but it triggers a big difference in behavior. The difference between s3 and s3n/s3a is that s3 is … Read more

The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256

AWS4-HMAC-SHA256, also known as Signature Version 4, (“V4”) is one of two authentication schemes supported by S3. All regions support V4, but US-Standard¹, and many — but not all — other regions, also support the other, older scheme, Signature Version 2 (“V2”). According to http://docs.aws.amazon.com/AmazonS3/latest/API/sig-v4-authenticating-requests.html … new S3 regions deployed after January, 2014 will only … Read more