Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/16700#discussion_r98317878
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveExternalCatalog.scala ---
@@ -899,6 +919,21 @@ private[spark] class HiveExternalCatalog(conf:
SparkConf, hadoopConf: Configurat
spec, partitionColumnNames, tablePath)
try {
tablePath.getFileSystem(hadoopConf).rename(wrongPath, rightPath)
+
+ // If the newSpec contains more than one depth partition,
FileSystem.rename just deletes
+ // the leaf(i.e. wrongPath), we should check if wrongPath's
parents need to be deleted.
+ // For example, give a newSpec 'A=1/B=2', after calling Hive's
client.renamePartitions,
+ // the location path in FileSystem is changed to 'a=1/b=2',
which is wrongPath, then
+ // although we renamed it to 'A=1/B=2', 'a=1/b=2' in FileSystem
is deleted, but 'a=1'
--- End diff --
Either `although` or `but` needs to be deleted.
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