Amazon EMR | Regions & Availability Zones

Question 1

Can I get a history of all EMR API calls made on my account for security or compliance auditing?

Regions & Availability Zones

Amazon EMR | Analytics

Answer 1

Yes. AWS CloudTrail is a web service that records AWS API calls for your account and delivers log files to you. The AWS API call history produced by CloudTrail enables security analysis, resource change tracking, and compliance auditing. Learn more about CloudTrail at the AWS CloudTrail detail page, and turn it on via CloudTrail’s AWS Management Console.

Question 2

How does Amazon EMR make use of Availability Zones?

Regions & Availability Zones

Amazon EMR | Analytics

Answer 2

Amazon EMR launches all nodes for a given cluster in the same Amazon EC2 Availability Zone. Running a cluster in the same zone improves performance of the jobs flows because it provides a higher data access rate. By default, Amazon EMR chooses the Availability Zone with the most available resources in which to run your cluster. However, you can specify another Availability Zone if required.

Question 3

In what Regions is this Amazon EMR available?

Regions & Availability Zones

Amazon EMR | Analytics

Answer 3

For a list of the supported Amazon EMR AWS regions, please visit the AWS Region Table for all AWS global infrastructure.

Question 4

Which Region should I select to run my clusters?

Regions & Availability Zones

Amazon EMR | Analytics

Answer 4

When creating a cluster, typically you should select the Region where your data is located.

Question 5

Can I use EU data in a cluster running in the US region and vice versa?

Regions & Availability Zones

Amazon EMR | Analytics

Answer 5

Yes you can. If you transfer data from one region to the other you will be charged bandwidth charges. For bandwidth pricing information, please visit the pricing section on the EC2 detail page.