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Posted to dev@parquet.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/01/18 21:37:00 UTC

[jira] [Updated] (PARQUET-1772) [C++] ParquetFileWriter: Data overwritten when output stream opened in append mode

     [ https://issues.apache.org/jira/browse/PARQUET-1772?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated PARQUET-1772:
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    Labels: pull-request-available  (was: )

> [C++] ParquetFileWriter: Data overwritten when output stream opened in append mode
> ----------------------------------------------------------------------------------
>
>                 Key: PARQUET-1772
>                 URL: https://issues.apache.org/jira/browse/PARQUET-1772
>             Project: Parquet
>          Issue Type: Bug
>            Reporter: Gawain BOLTON
>            Assignee: Gawain BOLTON
>            Priority: Major
>              Labels: pull-request-available
>
> An arrow::io::FileOutputStream can be opened in append mode.
> However, when the output stream is used by the ParquetFileWriter the data already present in the file is overwritten instead of being appended.
> From what I can see, Parquet does not have currently the functionality to append data.  As such I suggest detecting when an append is attempted to give an error rather than overwrite existing data.



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