Github user liancheng commented on a diff in the pull request:
https://github.com/apache/spark/pull/6583#discussion_r31517707
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/sources/ddl.scala ---
@@ -322,19 +322,10 @@ private[sql] object ResolvedDataSource {
Some(partitionColumnsSchema(data.schema, partitionColumns)),
caseInsensitiveOptions)
- // For partitioned relation r, r.schema's column ordering is
different with the column
- // ordering of data.logicalPlan. We need a Project to adjust the
ordering.
- // So, inside InsertIntoHadoopFsRelation, we can safely apply the
schema of r.schema to
- // the data.
- val project =
- Project(
- r.schema.map(field => new
UnresolvedAttribute(Seq(field.name))),
--- End diff --
This `r.schema` is where metadata discovery is triggered.
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