Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/15814#discussion_r87315912
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/InsertIntoHadoopFsRelationCommand.scala
---
@@ -104,4 +113,42 @@ case class InsertIntoHadoopFsRelationCommand(
Seq.empty[Row]
}
+
+ /**
+ * Deletes all partition files that match the specified static prefix.
Partitions with custom
+ * locations are also cleared based on the custom locations map given to
this class.
+ */
+ private def deleteMatchingPartitions(fs: FileSystem,
qualifiedOutputPath: Path): Unit = {
+ val staticPartitionPrefix = if (staticPartitionKeys.nonEmpty) {
+ "/" + partitionColumns.flatMap { p =>
+ staticPartitionKeys.get(p.name) match {
+ case Some(value) =>
+ Some(
+ PartitioningUtils.escapePathName(p.name) + "=" +
+ PartitioningUtils.escapePathName(value))
+ case None =>
+ None
+ }
+ }.mkString("/")
+ } else {
+ ""
+ }
+ // first clear the path determined by the static partition keys (e.g.
/table/foo=1)
+ val staticPrefixPath =
qualifiedOutputPath.suffix(staticPartitionPrefix)
+ if (fs.exists(staticPrefixPath) && !fs.delete(staticPrefixPath, true
/* recursively */)) {
--- End diff --
OK for me if we document it.
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