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Posted to dev@parquet.apache.org by "Ryan Blue (JIRA)" <ji...@apache.org> on 2017/10/07 00:29:00 UTC

[jira] [Created] (PARQUET-1125) Add UUID logical type

Ryan Blue created PARQUET-1125:
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             Summary: Add UUID logical type
                 Key: PARQUET-1125
                 URL: https://issues.apache.org/jira/browse/PARQUET-1125
             Project: Parquet
          Issue Type: Task
          Components: parquet-format
            Reporter: Ryan Blue


I think we should add a UUID logical type that is stored in a 16-byte fixed. The common string representation is 36 bytes instead of the 16 required. UUIDs are commonly used as unique identifiers, so it makes sense to have a good support. A binary representation will reduce memory when writing or building bloom filters and will reduce cycles needed to compare values.



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