geruh commented on code in PR #2251:
URL: https://github.com/apache/iceberg-python/pull/2251#discussion_r2241233357
##########
mkdocs/docs/configuration.md:
##########
@@ -105,6 +105,33 @@ You can also set the FileIO explicitly:
For the FileIO there are several configuration options available:
+### PyArrow FileSystem Extra Properties
+
+When using `PyArrowFileIO`, any properties with filesystem specific prefixes
that are not explicitly handled by PyIceberg will be passed to the underlying
PyArrow filesystem implementations.
+
+To use these properties, follow the format:
+
+```txt
+{fs_scheme}.{parameter_name}
+```
+
+- {fs_scheme} is the filesystem scheme (e.g., s3, hdfs, gcs).
+- {parameter_name} must match the name expected by the PyArrow filesystem.
+- Property values must use the correct type expected by the underlying
filesystem (e.g., string, integer, boolean).
+
+Below are examples of supported prefixes and how the properties are passed
through:
+
+<!-- markdown-link-check-disable -->
+
+| Property Prefix | FileSystem
| Example |
Description |
+|-----------------|------------------------------------------------------------------------------------------------------|-----------------------------|-----------------------------------------------------|
+| `s3.` |
[S3FileSystem](https://arrow.apache.org/docs/python/generated/pyarrow.fs.S3FileSystem.html)
| `s3.load_frequency=900` | Passed as `load_frequency=900` to
S3FileSystem |
+| `hdfs.` |
[HadoopFileSystem](https://arrow.apache.org/docs/python/generated/pyarrow.fs.HadoopFileSystem.html)
| `hdfs.replication=3` | Passed as `replication=3` to HadoopFileSystem
|
Review Comment:
yup it's just extra configs only related to pyarrow to stay backwards
compatible.
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