Github user windpiger commented on a diff in the pull request:
https://github.com/apache/spark/pull/16700#discussion_r98130978
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveExternalCatalog.scala ---
@@ -839,6 +839,25 @@ private[spark] class HiveExternalCatalog(conf:
SparkConf, hadoopConf: Configurat
spec.map { case (k, v) => partCols.find(_.equalsIgnoreCase(k)).get ->
v }
}
+
+ /**
+ * partition path created by Hive is lower-case, while Spark SQL will
+ * rename it with the partition name in partitionColumnNames, and this
function
+ * return the extra lower-case path created by Hive, and then we can
delete it.
+ * e.g. /path/A=1/B=2/C=3 rename to /path/A=4/B=5/C=6, the extra path
returned is
+ * /path/a=4, which also include all its' child path, such as
/path/a=4/b=2
+ */
+ def getExtraPartPathCreatedByHive(
+ lowerCaseSpec: TablePartitionSpec,
+ partitionColumnNames: Seq[String],
+ tablePath: Path): Path = {
--- End diff --
oh...sorry...thanks!
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