HyukjinKwon commented on a change in pull request #31401:
URL: https://github.com/apache/spark/pull/31401#discussion_r567363021



##########
File path: python/pyspark/sql/avro/functions.py
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@@ -37,7 +37,7 @@ def from_avro(data, jsonFormatSchema, options=None):
 
     Parameters
     ----------
-    data : :class:`Column` or str
+    data : :class:`pyspark.sql.Column` or str

Review comment:
       IIRC, it doesn't have to be fully qualified import path. `Column` is 
already being imported in this file. For example, it works for `` 
`:class:`DataFrame` ``, see 
https://hyukjin-spark.readthedocs.io/en/stable/reference/api/pyspark.sql.DataFrameReader.csv.html#pyspark.sql.DataFrameReader.csv
 and 
https://github.com/apache/spark/blob/master/python/pyspark/sql/readwriter.py#L527
   
   Can you investigate why it doesn't work here with `Column`? I would like to 
avoid making it as a fully qualified form which seems unnecessary. 




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