Github user dilipbiswal commented on a diff in the pull request:
https://github.com/apache/spark/pull/20579#discussion_r167463979
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetFileFormat.scala
---
@@ -68,6 +68,16 @@ class ParquetFileFormat
override def toString: String = "Parquet"
+ private def verifySchema(schema: StructType): Unit = {
+ if (schema.size < 1) {
--- End diff --
no particular reason :-). I can change that to "== 0".
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