HyukjinKwon commented on a change in pull request #35229:
URL: https://github.com/apache/spark/pull/35229#discussion_r786551368
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSource.scala
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@@ -434,7 +434,7 @@ case class DataSource(
hs.partitionSchema,
"in the partition schema",
equality)
- DataSourceUtils.verifySchema(hs.fileFormat, hs.dataSchema)
+ DataSourceUtils.checkFieldType(hs.fileFormat, hs.dataSchema)
Review comment:
There is actually a case when this vilification is useful. When a user
specifies a schema, we can fail fast without reading footers from files. Note
that the user specified schema can be different from the actual source schema,
e.g. some sources append a null column when there's no matching field like
Parquet.
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