In V3.X.X versions later than E-MapReduce (EMR) V3.32.0 as well as in V4.X.X versions later than EMR V4.5.0, MetaService is replaced with the ECS application role AliyunECSInstanceForEMRRole. This role is automatically assigned to each ECS instance in your EMR cluster when you create or scale out the cluster. Applications that run on your EMR cluster use this role to access other Alibaba Cloud resources without an AccessKey pair. This avoids the disclosure of the AccessKey pair in a configuration file.
|oss:PutObject||Uploads a file or folder.|
|oss:GetObject||Obtains a file or folder.|
|oss:DeleteObject||Deletes a file.|
|oss:AbortMultipartUpload||Terminates a multipart upload event.|
Use the ECS application role to obtain an STS temporary credential
You can use a Security Token Service (STS) temporary credential to access other Alibaba Cloud services within your account. For more information, see Use RAM roles to access other Alibaba Cloud services.