tustvold commented on code in PR #2811:
URL: https://github.com/apache/arrow-rs/pull/2811#discussion_r984414659
##########
object_store/src/aws/mod.rs:
##########
@@ -370,6 +374,7 @@ impl AmazonS3Builder {
/// * AWS_DEFAULT_REGION -> region
/// * AWS_ENDPOINT -> endpoint
/// * AWS_SESSION_TOKEN -> token
+ /// * AWS_CONTAINER_CREDENTIALS_RELATIVE_URI -> metadata_endpoint
Review Comment:
```suggestion
/// * AWS_CONTAINER_CREDENTIALS_RELATIVE_URI ->
<https://docs.aws.amazon.com/AmazonECS/latest/developerguide/task-iam-roles.html>
```
##########
object_store/src/aws/mod.rs:
##########
@@ -478,6 +492,16 @@ impl AmazonS3Builder {
self
}
+ /// Set the [instance metadata
endpoint](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html),
+ /// used primarily within AWS EC2.
+ ///
+ /// This defaults to the IPv4 endpoint: 169.254.169.254. One can
alternatively use the IPv6
+ /// endpoint fd00:ec2::254.
Review Comment:
```suggestion
/// This defaults to the IPv4 endpoint: http://169.254.169.254. One can
alternatively use the IPv6
/// endpoint http://fd00:ec2::254.
```
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