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