danhphan commented on issue #1279:
URL:
https://github.com/apache/iceberg-python/issues/1279#issuecomment-2466676408
Thanks @kevinjqliu , I'm reading the code base.
Can you please give me an example of expected unit-tests for the feature if
possible? For instance, if we create the follow `s3_fileio` with "s3.region":
"us-east-1" in the `session_properties`. Then we create an `input_file` on s3
bucket of `warehouse`, which is actually located in "eu-central-1" region, what
should be the expected results?
```
session_properties: Properties = {
"s3.endpoint": "http://localhost:9000";,
"s3.access-key-id": "admin",
"s3.secret-access-key": "password",
"s3.region": "us-east-1",
"s3.session-token": "s3.session-token",
**UNIFIED_AWS_SESSION_PROPERTIES,
}
s3_fileio = PyArrowFileIO(properties=session_properties)
print(s3_fileio.properties['s3.region']) #--> us-east-1
filename = str(uuid.uuid4())
input_file = s3_fileio.new_input(location=f"s3://warehouse/{filename}")
print(pyarrow.fs.resolve_s3_region('warehouse')) #--> eu-central-1
output_file = s3_fileio.new_output(location=f"s3://foo/{filename}")
print(pyarrow.fs.resolve_s3_region('foo')) #--> us-east-1
```
I'm thinking may be in the `def _initialize_fs(self, scheme: str, netloc:
Optional[str] = None) -> FileSystem` in your above comments, we can assign the
value for "region" in `client_kwargs` based on the value of `netloc` (or s3
bucket), but not sure if it is the right direction.
Like: `"region": pyarrow.fs.resolve_s3_region(netloc), `
```
def _initialize_fs(self, scheme: str, netloc: Optional[str] = None) ->
FileSystem:
if scheme in {"s3", "s3a", "s3n"}:
from pyarrow.fs import S3FileSystem
client_kwargs: Dict[str, Any] = {
"endpoint_override": self.properties.get(S3_ENDPOINT),
"access_key": get_first_property_value(self.properties,
S3_ACCESS_KEY_ID, AWS_ACCESS_KEY_ID),
"secret_key": get_first_property_value(self.properties,
S3_SECRET_ACCESS_KEY, AWS_SECRET_ACCESS_KEY),
"session_token": get_first_property_value(self.properties,
S3_SESSION_TOKEN, AWS_SESSION_TOKEN),
"region": get_first_property_value(self.properties, S3_REGION,
AWS_REGION),
}
```
Thank you.
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