Github user jiangxb1987 commented on a diff in the pull request: https://github.com/apache/spark/pull/19649#discussion_r148810633 --- Diff: sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveExternalCatalog.scala --- @@ -619,8 +619,10 @@ private[spark] class HiveExternalCatalog(conf: SparkConf, hadoopConf: Configurat } } - override def alterTableDataSchema( - db: String, table: String, newDataSchema: StructType): Unit = withClient { + override def doAlterTableDataSchema( --- End diff -- Please add description of this method.
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