Question: I'm getting the following warning reading a geojson with geopanda's read\_file():

```
...geodataframe.py:422: RuntimeWarning: Sequential read of iterator was interrupted. Resetting iterator. This can negatively impact the performance.
  for feature in features_lst:

```

Here's the code sample I used:

```
crime_gdf = gpd.read_file('datasets/crimes.geojson', bbox=bbox)

```

`crimes.geojson` is a file containing a large number of points, each with a 'Crime type'

`bbox` defines the boundaries

The code runs as expected, but I don't understand that warning.

**EDIT**

I converted the geojson to feather, and I get the same warning.

Answer: 
I found this `fiona` PR that references the warning: <https://github.com/Toblerity/Fiona/pull/965>

I can reproduce the issue with `fiona` 1.8.18 when calling `list(src)` on a recently opened `Collection`, but not with 1.8.17. So I think this is a regression that was introduced in `fiona` 1.8.18, released on 2020-11-17.
While it could cause problems ignoring warnings in some contexts, I am finding this one particularly annoying repeated in my code output.

I found the warning can be ignored using

```
import warnings
# filter out RuntimeWarnings, due to geopandas/fiona read file spam
# https://stackoverflow.com/questions/64995369/geopandas-warning-on-read-file
warnings.filterwarnings("ignore",category=RuntimeWarning)

```

I added in the comments referencing this post to explain why I am filtering out these warnings. When this warning is suppressed in a future geopandas / fiona release then this code snippet should probably be removed, as it may also suppress meaningful warnings and could be problematic in some contexts.