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Posted to dev@parquet.apache.org by "Wes McKinney (JIRA)" <ji...@apache.org> on 2019/05/01 22:46:00 UTC

[jira] [Closed] (PARQUET-810) [C++] Read from file with schema evolution

     [ https://issues.apache.org/jira/browse/PARQUET-810?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wes McKinney closed PARQUET-810.
--------------------------------

> [C++] Read from file with schema evolution
> ------------------------------------------
>
>                 Key: PARQUET-810
>                 URL: https://issues.apache.org/jira/browse/PARQUET-810
>             Project: Parquet
>          Issue Type: Improvement
>          Components: parquet-cpp
>            Reporter: Wes McKinney
>            Priority: Major
>
> In a large dataset, new optional fields may appear later in the data's lifetime. Assuming we know the current schema and all fields, we must provide an API to read from an older file that is missing some of the optional fields in its metadata. 



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