[GitHub] [spark] gengliangwang commented on a change in pull request #27045: [SPARK-27506][SQL][FOLLOWUP] Use option `avroSchema` to specify an evolved schema in `from_avro`

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gengliangwang commented on a change in pull request #27045: [SPARK-27506][SQL][FOLLOWUP] Use option `avroSchema` to specify an evolved schema in `from_avro`
URL: https://github.com/apache/spark/pull/27045#discussion_r361922716
 
 

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 File path: external/avro/src/main/scala/org/apache/spark/sql/avro/AvroOptions.scala
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 @@ -36,18 +36,14 @@ class AvroOptions(
   }
 
   /**
-   * Optional schema provided by an user in JSON format.
+   * Optional schema provided by an user in JSON format. This option can be set when
+   * 1. for reading Avro, the expected schema for deserialization is compatible with
 
 Review comment:
   Yes. I was trying to explain the actual usage.
   The doc is revised in my latest commit.

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