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Posted to jira@arrow.apache.org by "Shan Huang (Jira)" <ji...@apache.org> on 2021/09/23 09:40:00 UTC

[jira] [Created] (ARROW-14089) [C++] Correctly read DELTA_BYTE_ARRAY data written with bug PARQUET-246

Shan Huang created ARROW-14089:
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             Summary: [C++] Correctly read DELTA_BYTE_ARRAY data written with bug PARQUET-246
                 Key: ARROW-14089
                 URL: https://issues.apache.org/jira/browse/ARROW-14089
             Project: Apache Arrow
          Issue Type: Improvement
            Reporter: Shan Huang


If a parquet file is written by parquet-mr before version 1.8.0, the bug [PARQUET-246|https://issues.apache.org/jira/browse/PARQUET-246] will produce data inconsistent with the encoding of DELTA_BYTE_ARRAY.

There are two solutions:

1. We should update the read side to recover data written with this bug.

2. We need to throw an exception if the parquet file is written by parquet-mr before version 1.8.0 and has DELTA_BYTE_ARRAY encoding data.



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