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Posted to dev@arrow.apache.org by "Florian Jetter (JIRA)" <ji...@apache.org> on 2019/07/09 15:22:00 UTC

[jira] [Created] (ARROW-5889) [Python][C++] Parquet backwards compat for timestamps without timezone broken

Florian Jetter created ARROW-5889:
-------------------------------------

             Summary: [Python][C++] Parquet backwards compat for timestamps without timezone broken
                 Key: ARROW-5889
                 URL: https://issues.apache.org/jira/browse/ARROW-5889
             Project: Apache Arrow
          Issue Type: Bug
    Affects Versions: 0.14.0
            Reporter: Florian Jetter
         Attachments: 0.12.1.parquet, 0.13.0.parquet

When reading a parquet file which has timestamp fields they are read as a timestamp with timezone UTC if the parquet file was written by pyarrow 0.13.0 and/or 0.12.1.

Expected behavior would be that they are loaded as timestamps without any timezone information.

The attached files contain one row for all basic types and a few nested types, the timestamp fields are called datetime64 and datetime64_tz

see also [https://github.com/JDASoftwareGroup/kartothek/tree/master/reference-data/arrow-compat]

[https://github.com/JDASoftwareGroup/kartothek/blob/c47e52116e2dc726a74d7d6b97922a0252722ed0/tests/serialization/test_arrow_compat.py#L31]

 



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