gengliangwang commented on issue #26524: [SPARK-29898][SQL] Support Avro Custom 
Logical Types
URL: https://github.com/apache/spark/pull/26524#issuecomment-558298514
 
 
   > With this extension you can add your custom logical types and map it to 
the properly SQL type. For example; read a string ISO date from Avro (marked as 
iso-date logical type) and use as DateType in Spark.
   
   Sorry I don't get it. Could you provide a reasonable scenario? 

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