HyukjinKwon commented on a change in pull request #32835:
URL: https://github.com/apache/spark/pull/32835#discussion_r648799755



##########
File path: python/docs/source/user_guide/pandas_on_spark/transform_apply.rst
##########
@@ -85,8 +85,8 @@ then applies the given function with pandas DataFrame or 
Series as input and out
    ...
    >>> kdf.koalas.apply_batch(pandas_plus)
 
-The functions in both examples take a pandas DataFrame as a chunk of Koalas 
DataFrame, and output a pandas DataFrame.
-Koalas combines the pandas DataFrames as a Koalas DataFrame.
+The functions in both examples take a pandas DataFrame as a chunk of pandas 
APIs on Spark DataFrame, and output a pandas DataFrame.
+Pandas APIs on Spark combines the pandas DataFrames as a pandas APIs on Spark 
DataFrame.

Review comment:
       ```suggestion
   Pandas APIs on Spark combine the pandas DataFrames as a pandas APIs on Spark 
DataFrame.
   ```

##########
File path: python/docs/source/user_guide/pandas_on_spark/transform_apply.rst
##########
@@ -85,8 +85,8 @@ then applies the given function with pandas DataFrame or 
Series as input and out
    ...
    >>> kdf.koalas.apply_batch(pandas_plus)
 
-The functions in both examples take a pandas DataFrame as a chunk of Koalas 
DataFrame, and output a pandas DataFrame.
-Koalas combines the pandas DataFrames as a Koalas DataFrame.
+The functions in both examples take a pandas DataFrame as a chunk of pandas 
APIs on Spark DataFrame, and output a pandas DataFrame.
+Pandas APIs on Spark combines the pandas DataFrames as a pandas APIs on Spark 
DataFrame.

Review comment:
       ditto for DataFrame.

##########
File path: python/docs/source/user_guide/pandas_on_spark/transform_apply.rst
##########
@@ -101,7 +101,7 @@ treated that it belongs to a new different DataFrame. See 
also
   :width: 650
 
 In case of :func:`Series.koalas.transform_batch`, it is also similar with 
:func:`DataFrame.koalas.transform_batch`; however, it takes
-a pandas Series as a chunk of Koalas Series.
+a pandas Series as a chunk of pandas APIs on Spark Series.

Review comment:
       pandas-on-Spark Series

##########
File path: python/docs/source/user_guide/pandas_on_spark/transform_apply.rst
##########
@@ -111,7 +111,7 @@ a pandas Series as a chunk of Koalas Series.
    ...
    >>> kdf.a.koalas.transform_batch(pandas_plus)
 
-Under the hood, each batch of Koalas Series is split to multiple pandas 
Series, and each function computes on that as below:
+Under the hood, each batch of pandas APIs on Spark Series is split to multiple 
pandas Series, and each function computes on that as below:

Review comment:
       pandas-on-Spark Series




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