Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/15797#discussion_r86906239
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveExternalCatalog.scala ---
@@ -810,13 +840,37 @@ private[spark] class HiveExternalCatalog(conf:
SparkConf, hadoopConf: Configurat
newSpecs: Seq[TablePartitionSpec]): Unit = withClient {
client.renamePartitions(
db, table, specs.map(lowerCasePartitionSpec),
newSpecs.map(lowerCasePartitionSpec))
+
+ val tableMeta = getTable(db, table)
+ val partitionColumnNames = tableMeta.partitionColumnNames
+ // Hive metastore is not case preserving and keeps partition columns
with lower cased names.
+ // When Hive rename partition for managed tables, it will update the
partition location with
+ // a default value generate by the new spec and lower cased partition
column names. This is
+ // unexpected and we need to call `alterPartitions` to fix the
partition location.
+ val hasUpperCasePartitionColumn = partitionColumnNames.exists(col =>
col.toLowerCase != col)
+ if (tableMeta.tableType == MANAGED && hasUpperCasePartitionColumn) {
--- End diff --
no, Hive only update the partition location when renaming partitions for
managed table.
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