Github user vanzin commented on a diff in the pull request:
https://github.com/apache/spark/pull/18849#discussion_r134029768
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveExternalCatalog.scala ---
@@ -1175,6 +1205,27 @@ private[spark] class HiveExternalCatalog(conf:
SparkConf, hadoopConf: Configurat
client.listFunctions(db, pattern)
}
+ /** Detect whether a table is stored with Hive-compatible metadata. */
+ private def isHiveCompatible(table: CatalogTable): Boolean = {
--- End diff --
A quick look shows that all places that do a metastore `alterTable` use
`getRawTable` to get the metadata, meaning they would preserve the new property
even in old Spark versions.
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