Hi there, I have a question about saving the dataset in S3. This is a part of

catalog.yml

train_raw_data:
  type: CachedDataSet
  versioned: true
  dataset:
    type: pickle.PickleDataSet
    filepath: s3://test/data/train_raw_data.pickle

if I have proper AWS credentials in

~/.aws/credentials

, it works well(saving the dataset into s3 path I set) But I need to set the credentials in

conf/local/credentials.yml

for some reason. so I removed

~/.aws/credentials

and create

conf/local/credentials.yml

like

aws_access_key_id: AAA
aws_secret_access_key: BBB
aws_session_token: XXX

It doesn't work and I think boto3 print out

Unable to locate credentials

message. I also tried to change the format of credentials.yml with modified

catalog.yml

like

dev_s3:
  aws_access_key_id: AAA
  aws_secret_access_key: BBB
  aws_session_token: XXX

```
train_raw_data:
  type: CachedDataSet
  versioned: true
  credentials: dev_s3
  dataset:
    type: pickle.PickleDataSet
    filepath: s3://test/data/train_raw_data.pickle

It doesn't work either and it shows `DataSet 'train_raw_data' must only contain arguments valid for the constructor of

kedro.io.cached_dataset.CachedDataSet

.`

it works!!

One more quick question, Is there a way to set

default credentials

in

conf/local/credentials

? if we can set the default credentials instead named credentials such as

dev_s3

, we may don't need to specify

credentials: dev_s3

for all datasets.