[jira] [Created] (IMPALA-5982) String columns saved to Parquet files should be annotated with the UTF8 logical type

["Zoltan Ivanfi (JIRA)" <ji...@apache.org>]

Zoltan Ivanfi created IMPALA-5982:
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             Summary: String columns saved to Parquet files should be annotated with the UTF8 logical type
                 Key: IMPALA-5982
                 URL: https://issues.apache.org/jira/browse/IMPALA-5982
             Project: IMPALA
          Issue Type: Bug
            Reporter: Zoltan Ivanfi


When creating Parquet files, Impala doesn't add the proper logical type corresponding to the string SQL type. String columns should be annotated with the [{{UTF8}}|https://github.com/apache/parquet-format/blob/master/LogicalTypes.md#utf8-strings] logical type.

The lack of the {{UTF8}} logical type annotation makes it harder to consume the data using other tools, or even by Impala itself if the files are manually moved around in the filesystem and a new table has to be created based on their metadata.



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