Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/21320#discussion_r199365004
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetReadSupport.scala
---
@@ -47,16 +47,25 @@ import org.apache.spark.sql.types._
*
* Due to this reason, we no longer rely on [[ReadContext]] to pass
requested schema from [[init()]]
* to [[prepareForRead()]], but use a private `var` for simplicity.
+ *
+ * @param parquetMrCompatibility support reading with parquet-mr or
Spark's built-in Parquet reader
--- End diff --
The description is not clear. Could you make it better?
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