aihuaxu opened a new issue, #508:
URL: https://github.com/apache/parquet-format/issues/508

   ### Describe the enhancement requested
   
   Per Parquet's requirements, we need at least two reference implementations 
to finalize the Variant logical type specification and  here are the current 
status:
   
   - Java already has the encoding and shredding implementations in place:
   
   [Variant Decoding](https://github.com/apache/parquet-java/pull/3197)
   [Variant Encoding](https://github.com/apache/parquet-java/pull/3202)
   [Variant Shredding 
Writer](https://github.com/apache/parquet-java/issues/3223)
   [Variant Shredding 
Reader](https://github.com/apache/parquet-java/issues/3211)
   
   - Go also includes encoding and shredding support:
   
   [Variant Encoding/Decoding](https://github.com/apache/arrow-go/pull/344)
   [Variant Shredding](https://github.com/apache/arrow-go/pull/434)
   
   Rust is currently working on the shredding implementation. In addition to 
these, we already have a full Variant implementation in Apache Iceberg, as well 
as in some closed-source engines. At this point, I think we have enough 
implementation coverage to move forward with finalizing the Variant spec. 
   
   


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