HyukjinKwon commented on a change in pull request #28896:
URL: https://github.com/apache/spark/pull/28896#discussion_r443900676
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/csv/CSVInferSchema.scala
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@@ -103,7 +103,16 @@ class CSVInferSchema(val options: CSVOptions) extends
Serializable {
typeSoFar
} else {
typeSoFar match {
- case NullType => tryParseInteger(field)
+ case NullType =>
+ tryParseInteger(field) match {
Review comment:
Let's don't have a separate rule alone here. The problem here seems like
when the type is inferred from single partition alone, and the compatible types
are not respected. You might have to call `compatibleType` from my cursory look.
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