summermousa-vendia commented on code in PR #1635:
URL: https://github.com/apache/iceberg-python/pull/1635#discussion_r1954849491
##########
mkdocs/docs/configuration.md:
##########
@@ -287,6 +287,55 @@ class UUIDLocationProvider(LocationProvider):
return f"{prefix}/{partition_key.to_path()}/{data_file_name}" if
partition_key else f"{prefix}/{data_file_name}"
```
+### Loading a Custom FileIO Implementation
+
+The `PyIceberg` library allows you to use custom FileIO implementations,
enabling flexible file handling tailored to your specific needs. This feature
is particularly useful when working with different storage backends or file
formats. To implement a custom FileIO, you can specify the `PY_IO_IMPL`
property in your configuration. The property should point to the custom FileIO
class you wish to use.
+
+An example, custom `FileIO` implementation is shown below.
+
+```py
+from pyiceberg.io import InputFile, OutputFile
+from pyiceberg.io.fsspec import FsspecFileIO
+from urllib.parse import urlparse
+import os
+
+class RelativeFileIO(FsspecFileIO):
Review Comment:
I just wrote a python implementation of this jar plugin:
https://github.com/lightmelodies/iceberg-relative-io
I am using this implementation for my own project and it works as I would
expect.
What kind of example would you prefer me to include? I was hoping to write
something a little bit contrived just so that people could be familiar with how
to implement their own fileIO plugins.
How would you like me to change it?
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