Minor follow-up to P2P by default (#10008)

jrbourbeau · web-flow · commit fd9091aa767d · 2023-03-01T14:19:10.000-06:00
diff --git a/dask/dataframe/groupby.py b/dask/dataframe/groupby.py
@@ -115,7 +115,7 @@ def _determine_shuffle(shuffle, split_out):
             # For more context, see
             # https://github.com/dask/dask/pull/9826/files#r1072395307
             # https://github.com/dask/distributed/issues/5502
-            return shuffle or config.get("dataframe.shuffle.algorithm", None) or "tasks"
+            return config.get("dataframe.shuffle.algorithm", None) or "tasks"
         else:
             return False
     return shuffle
diff --git a/docs/source/dataframe-groupby.rst b/docs/source/dataframe-groupby.rst
@@ -97,20 +97,20 @@ Client as default:
     client = Client('scheduler:8786', set_as_default=True)
 
 Alternatively, if you prefer to avoid defaults, you can configure the global
-shuffling method by using the ``dask.config.set(shuffle=...)`` command.
+shuffling method with the ``dataframe.shuffle.algorithm`` configuration option.
 This can be done globally:
 
 .. code-block:: python
 
-    dask.config.set(dataframe_shuffle_algorithm='p2p')
+    dask.config.set({"dataframe.shuffle.algorithm": "p2p"})
 
     ddf.groupby(...).apply(...)
 
 or as a context manager:
 
 .. code-block:: python
 
-    with dask.config.set(dataframe_shuffle_algorithm='p2p'):
+    with dask.config.set({"dataframe.shuffle.algorithm": "p2p"}):
         ddf.groupby(...).apply(...)
 
 
