MrDLontheway commented on issue #27993: [SPARK-30996][Core] invaild parquet map 
key type
URL: https://github.com/apache/spark/pull/27993#issuecomment-604208882
 
 
   
https://github.com/apache/spark/blob/336621e277794ab2e6e917391a928ec662498fcf/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetSchemaConverter.scala#L228
   
   The key is checked here, it seems that the keyType is not necessarily 
Primitive.
   After I remove it, I can read the previous data normally. Can anyone explain 
this place?

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