Fokko commented on a change in pull request #24405: [SPARK-27506][SQL] Allow
deserialization of Avro data using compatible schemas
URL: https://github.com/apache/spark/pull/24405#discussion_r335344093
##########
File path: docs/sql-data-sources-avro.md
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@@ -240,6 +240,14 @@ Data source options of Avro can be set via:
</td>
<td>function <code>from_avro</code></td>
</tr>
+ <tr>
+ <td><code>writerSchema</code></td>
+ <td>None</td>
+ <td>Optional Avro schema (in JSON format) that was used to serialize the
data. This should be set if the schema provided
+ for deserialization is compatible with - but not the same as - the one
used to originally convert the data to Avro.
+ </td>
Review comment:
Would it be possible to link to the Confluent documentation? They have an
excellent document on schema compatibility and evolution:
https://docs.confluent.io/current/schema-registry/avro.html
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