[jira] [Assigned] (PARQUET-2034) Document dictionary page position

["Gabor Szadovszky (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PARQUET-2034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gabor Szadovszky reassigned PARQUET-2034:
-----------------------------------------

    Assignee: Gabor Szadovszky

> Document dictionary page position
> ---------------------------------
>
>                 Key: PARQUET-2034
>                 URL: https://issues.apache.org/jira/browse/PARQUET-2034
>             Project: Parquet
>          Issue Type: Bug
>          Components: parquet-format
>            Reporter: Gabor Szadovszky
>            Assignee: Gabor Szadovszky
>            Priority: Major
>
> Dictionary page shall be always written to the first position of the column chunk. Unfortunately, we only have one statement about this "hidden" at the [encodings doc|https://github.com/apache/parquet-format/blob/master/Encodings.md#dictionary-encoding-plain_dictionary--2-and-rle_dictionary--8]:
> {quote}The dictionary page is written first, before the data pages of the column chunk.{quote}
> This statement is not emphasized enough and not prepared for the potential extension of the available page types. It also should be placed to a more central place of the specification and also in the thrift file.



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