thesquelched commented on issue #1138:
URL: https://github.com/apache/iceberg/issues/1138#issuecomment-670717050


   I think there's a little bit more work to be done. I get the following when 
using `org.apache.iceberg.parquet.ParquetUtil.fileMetrics`:
   
   ```
   java.lang.UnsupportedOperationException: Cannot convert unknown primitive 
type: optional int96 created_at
     at 
org.apache.iceberg.parquet.MessageTypeToType.primitive(MessageTypeToType.java:163)
     at 
org.apache.iceberg.parquet.MessageTypeToType.primitive(MessageTypeToType.java:41)
     at 
org.apache.iceberg.parquet.ParquetTypeVisitor.visit(ParquetTypeVisitor.java:41)
     at 
org.apache.iceberg.parquet.ParquetTypeVisitor.visitFields(ParquetTypeVisitor.java:168)
     at 
org.apache.iceberg.parquet.ParquetTypeVisitor.visit(ParquetTypeVisitor.java:38)
     at 
org.apache.iceberg.parquet.ParquetSchemaUtil.convert(ParquetSchemaUtil.java:47)
     at 
org.apache.iceberg.parquet.ParquetUtil.footerMetrics(ParquetUtil.java:90)
     at org.apache.iceberg.parquet.ParquetUtil.fileMetrics(ParquetUtil.java:74)
     at getMetrics(<console>:43)
     ... 53 elided
   ```


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