gengliangwang commented on code in PR #48043:
URL: https://github.com/apache/spark/pull/48043#discussion_r1762241180
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docs/sql-data-sources-avro.md:
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@@ -628,3 +635,41 @@ You can also specify the whole output Avro schema with the
option `avroSchema`,
<td>decimal</td>
</tr>
</table>
+
+## Handling circular references of Avro fields
+In Avro, a circular reference occurs when the type of a field is defined in
one of the parent records. This can cause issues when parsing the data, as it
can result in infinite loops or other unexpected behavior.
+To read Avro data with schema that has circular reference, users can use the
`recursiveFieldMaxDepth` option to specify the maximum number of levels of
recursion to allow when parsing the schema. By default, `spark-avro` will not
permit recursive fields by setting `recursiveFieldMaxDepth` to -1. However, you
can set this option to 1 to 15 if needed.
Review Comment:
Replace `spark-avro` to `Spark Avro data source` ?
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