cfmcgrady commented on a change in pull request #33212:
URL: https://github.com/apache/spark/pull/33212#discussion_r670113970
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File path: docs/sql-migration-guide.md
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@@ -22,6 +22,10 @@ license: |
* Table of contents
{:toc}
+## Upgrading from Spark SQL 3.2 to 3.3
+
+ - In Spark 3.3, spark will fail when parsing a JSON/CSV string with
`PERMISSIVE` mode and schema contains non-nullable fields. You can set mode to
`FAILFAST/DROPMALFORMED` if you want to read JSON/CSV with a schema that
contains nullable fields.
Review comment:
This change also affects parsing CSV string, I will add a unit test for
CSV in a separate pr. cc @cloud-fan @HyukjinKwon
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