Github user budde commented on a diff in the pull request:
https://github.com/apache/spark/pull/16944#discussion_r104086046
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveExternalCatalog.scala ---
@@ -597,6 +597,16 @@ private[spark] class HiveExternalCatalog(conf:
SparkConf, hadoopConf: Configurat
}
}
+ override def alterTableSchema(db: String, table: String, schema:
StructType): Unit = withClient {
+ requireTableExists(db, table)
+ val rawTable = getRawTable(db, table)
+ val withNewSchema = rawTable.copy(schema = schema)
--- End diff --
At line 606 we need to invoke ```tableMetaToTableProps()``` with a
```CatalogTable``` record containing the new table schema in order to generate
the Hive table properties based on the new schema.
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