GitBook: [master] 62 pages modified

woop · gitbook-bot · commit 17d18748a5fe · 2021-09-07T14:15:34.000Z
diff --git a/docs/reference/data-sources/file.md b/docs/reference/data-sources/file.md
@@ -4,6 +4,10 @@
 
 File data sources allow for the retrieval of historical feature values from files on disk for building training datasets, as well as for materializing features into an online store.
 
+{% hint style="warning" %}
+FileSource is meant for development purposes only and is not optimized for production use.
+{% endhint %}
+
 ## Example
 
 ```python
