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https://issues.apache.org/jira/browse/ARROW-5691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16870675#comment-16870675
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Wes McKinney commented on ARROW-5691:
-------------------------------------

Well, the symbols have to go into some shared library, so pick your poison. My 
proposed solution

* libparquet depends on libarrow
* libarrow_dataset depends on both libarrow and libparquet, and contains 
arrow::csv, arrow::json, and arrow::parquet symbols, usable directly without 
going through datasets API.

What other structure would you prefer? I don't think we should create a 
standalone "libarrow_parquet" library. 

Personally I would prefer to have a single shared library that contains all 
symbols related to low level (like the current {{parquet::arrow}} symbols) and 
high level (the proposed {{arrow::dataset}} APIs) interactions with file 
formats. Both low- and high-level file APIs will continue to be provided 

> [C++] Relocate src/parquet/arrow code to src/arrow/dataset/parquet
> ------------------------------------------------------------------
>
>                 Key: ARROW-5691
>                 URL: https://issues.apache.org/jira/browse/ARROW-5691
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: C++
>            Reporter: Wes McKinney
>            Priority: Major
>             Fix For: 1.0.0
>
>
> I think it may make sense to continue developing and maintaining this code in 
> the same place as other file format <-> Arrow serialization code and dataset 
> handling routines (e.g. schema normalization). Under this scheme, libparquet 
> becomes a link time dependency of libarrow_dataset



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