Github user nongli commented on a diff in the pull request:
https://github.com/apache/spark/pull/10498#discussion_r48588450
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/DataFrameWriter.scala ---
@@ -189,13 +205,44 @@ final class DataFrameWriter private[sql](df:
DataFrame) {
ifNotExists = false)).toRdd
}
- private def normalizedParCols: Option[Seq[String]] =
partitioningColumns.map { parCols =>
- parCols.map { col =>
- df.logicalPlan.output
- .map(_.name)
- .find(df.sqlContext.analyzer.resolver(_, col))
- .getOrElse(throw new AnalysisException(s"Partition column $col not
found in existing " +
- s"columns (${df.logicalPlan.output.map(_.name).mkString(",
")})"))
+ private def normalizedParCols: Option[Seq[String]] =
partitioningColumns.map { cols =>
+ cols.map(normalize(_, "Partition"))
+ }
+
+ private def normalizedBucketCols: Option[Seq[String]] =
bucketingColumns.map { cols =>
+ cols.map(normalize(_, "Bucketing"))
+ }
+
+ private def normalizedSortCols: Option[Seq[String]] = sortingColumns.map
{ cols =>
+ cols.map(normalize(_, "Sorting"))
+ }
+
+ private def getBucketSpec: Option[BucketSpec] = {
+ if (numBuckets.isEmpty && sortingColumns.isDefined) {
+ throw new IllegalArgumentException("Specify numBuckets and bucketing
columns first.")
--- End diff --
This error message is not quite right. The order of bucketBy and sortBy
doesn't matter right?
e.g.
df.write.bucketBy().sortBy() and df.write.sortBy.bucketBy both work?
Should be something like sortBy requires bucketBy.
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