Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18804#discussion_r130803491
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveExternalCatalog.scala ---
@@ -642,8 +642,13 @@ private[spark] class HiveExternalCatalog(conf:
SparkConf, hadoopConf: Configurat
if (stats.get.rowCount.isDefined) {
statsProperties += STATISTICS_NUM_ROWS ->
stats.get.rowCount.get.toString()
}
+
+ // For datasource tables and hive serde tables created by spark 2.1
or higher,
--- End diff --
IIUC, here I think we should test when the schema read by `getRawTable`
(i.e., `rawTable`) is different than the schema stored in table properties.
Previously because two copies of schema are different, you will get the
`NoSuchElement` too. That's why we should call `restoreTableMetadata` here for
hive serde tables.
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