cloud-fan commented on a change in pull request #29328:
URL: https://github.com/apache/spark/pull/29328#discussion_r468322696



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File path: sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala
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@@ -245,6 +246,10 @@ class DataFrameReader private[sql](sparkSession: 
SparkSession) extends Logging {
         "read files of Hive data source directly.")
     }
 

Review comment:
       parquet is a builtin source, so we can make it work anyway. `def 
load(path: String)` is general for other external sources, and we should 
guarantee backward compatibility here.




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