[GitHub] [spark] gatorsmile commented on a change in pull request #24233: [SPARK-26356][SQL] remove SaveMode from data source v2

[GitBox <gi...@apache.org>]

gatorsmile commented on a change in pull request #24233: [SPARK-26356][SQL] remove SaveMode from data source v2
URL: https://github.com/apache/spark/pull/24233#discussion_r287226567
 
 

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 File path: sql/core/src/main/java/org/apache/spark/sql/sources/v2/TableProvider.java
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 @@ -26,6 +26,9 @@
  * The base interface for v2 data sources which don't have a real catalog. Implementations must
  * have a public, 0-arg constructor.
  * <p>
+ * Note that, TableProvider can only apply data operations to existing tables, like read, append,
+ * delete, and overwrite. Not operations that require metadata changes, like create/drop tables.
 
 Review comment:
   `Not operations` -> `It does not support the operations`

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