I am using AWS data-pipeline to export a DDB table, but when I activate I get an error:
Web service limit exceeded: Exceeded number of concurrent executions. Please set the field 'maxActiveInstances' to a higher value in your pipeline or wait for the currenly running executions to complete before trying again (Service: DataPipeline; Status Code: 400; Error Code: InvalidRequestException; Request ID: efbf9847-49fb-11e8-abef-1da37c3550b5)
How do I set this maxActiveInstances property using the AWS UI?
You can set it as a property on your Ec2Resource[1] (or EmrActivity[2]) object. Using the UI, click Edit Pipeline, click on Resources on the right hand side of the screen (it's a collapsable menu). There should be an Ec2Resource object. There should be a drop down on this object called "Add an additional field" and you should see max active instances in the drop down.
[1]https://docs.aws.amazon.com/datapipeline/latest/DeveloperGuide/dp-object-ec2resource.html [2] https://docs.aws.amazon.com/datapipeline/latest/DeveloperGuide/dp-object-emractivity.html