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https://issues.apache.org/jira/browse/PARQUET-1253?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16426584#comment-16426584
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Nandor Kollar commented on PARQUET-1253:
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Thanks Ryan for clarifying my questions!

> Support for new logical type representation
> -------------------------------------------
>
>                 Key: PARQUET-1253
>                 URL: https://issues.apache.org/jira/browse/PARQUET-1253
>             Project: Parquet
>          Issue Type: Improvement
>          Components: parquet-mr
>            Reporter: Nandor Kollar
>            Assignee: Nandor Kollar
>            Priority: Major
>
> Latest parquet-format 
> [introduced|https://github.com/apache/parquet-format/commit/863875e0be3237c6aa4ed71733d54c91a51deabe#diff-0f9d1b5347959e15259da7ba8f4b6252]
>  a new representation for logical types. As of now this is not yet supported 
> in parquet-mr, thus there's no way to use parametrized UTC normalized 
> timestamp data types. When reading and writing Parquet files, besides 
> 'converted_type' parquet-mr should use the new 'logicalType' field in 
> SchemaElement to tell the current logical type annotation. To maintain 
> backward compatibility, the semantic of converted_type shouldn't change.



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