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Posted to issues-all@impala.apache.org by "Csaba Ringhofer (JIRA)" <ji...@apache.org> on 2019/01/17 13:36:00 UTC

[jira] [Resolved] (IMPALA-7889) Write new logical types in Parquet

     [ https://issues.apache.org/jira/browse/IMPALA-7889?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Csaba Ringhofer resolved IMPALA-7889.
-------------------------------------
    Resolution: Implemented

> Write new logical types in Parquet
> ----------------------------------
>
>                 Key: IMPALA-7889
>                 URL: https://issues.apache.org/jira/browse/IMPALA-7889
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Backend
>            Reporter: Csaba Ringhofer
>            Assignee: Csaba Ringhofer
>            Priority: Major
>              Labels: parquet
>
> Parquet added LogicalTypeAnnotation as a new way to express metadata about columns. For types that already exist, the old way (ConvertedType) should be also written to remain compatible with older readers, but new types (like int64 nano) are only added as LogicalTypeAnnotation.



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