Github user jmchung commented on a diff in the pull request:
https://github.com/apache/spark/pull/18865#discussion_r137928316
--- Diff: docs/sql-programming-guide.md ---
@@ -1542,6 +1542,10 @@ options.
# Migration Guide
+## Upgrading From Spark SQL 2.2 to 2.3
+
+ - The queries which select only `spark.sql.columnNameOfCorruptRecord`
column are disallowed now. Notice that the queries which have only the column
after column pruning (e.g. filtering on the column followed by a counting
operation) are also disallowed. If you want to select only the corrupt records,
you should cache or save the underlying Dataset and DataFrame before running
such queries.
--- End diff --
Maybe a typo `_corrupt_column`, it should be `_corrupt_record`.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
