Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/14155#discussion_r74665317
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveExternalCatalog.scala ---
@@ -207,15 +310,52 @@ private[spark] class HiveExternalCatalog(client:
HiveClient, hadoopConf: Configu
assert(tableDefinition.identifier.database.isDefined)
val db = tableDefinition.identifier.database.get
requireTableExists(db, tableDefinition.identifier.table)
+ verifyTableProperties(tableDefinition)
--- End diff --
alterTable is my main concern. It is possible that `tableDefinition` is in
the standard form. But, the actual metadata stored in the metastore is using
properties to store schema. Then, the alterTable may just fail or significantly
change the metadata in metastore.
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