Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18824#discussion_r131059637
--- Diff:
sql/hive/src/main/scala/org/apache/spark/sql/hive/client/HiveClientImpl.scala
---
@@ -413,7 +414,10 @@ private[hive] class HiveClientImpl(
unsupportedFeatures += "partitioned view"
}
- val properties = Option(h.getParameters).map(_.asScala.toMap).orNull
+ val properties =
Option(h.getParameters).map(_.asScala.toMap).getOrElse(Map())
+
+ val provider =
properties.get(HiveExternalCatalog.DATASOURCE_PROVIDER)
+ .orElse(Some(DDLUtils.HIVE_PROVIDER))
--- End diff --
Oh. Nvm. Looks like we access the key `DATASOURCE_PROVIDER` in
`table.properties` for that purpose. This should be safe. Anyway, actually we
will set `provider` for `CatalogTable` later when restoring the table read from
metastore.
Another concern is we previously don't restore `provider` for a view,
please refer to
https://github.com/apache/spark/blob/f18b905f6cace7686ef169fda7de474079d0af23/sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveExternalCatalog.scala#L682.
By this change, we will set `provider` to `HIVE_PROVIDER` too for view.
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