[jira] [Updated] (ARROW-3822) [C++] parquet::arrow::FileReader::GetRecordBatchReader has logical error on row groups with chunked columns

["Ben Kietzman (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-3822?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ben Kietzman updated ARROW-3822:
--------------------------------
    Description: 
EDIT: https://github.com/apache/arrow/pull/3911#issuecomment-473679153

We don't currently test that all data is iterated through when reading from a Parquet file where the result is chunked.

  was:
If a BinaryArray / StringArray overflows a single column when reading a row group, the resulting table will have a ChunkedArray. Using TableBatchReader in 

https://github.com/apache/arrow/blob/master/cpp/src/parquet/arrow/reader.cc#L176

will therefore only return a part of the row group, discarding the rest


> [C++] parquet::arrow::FileReader::GetRecordBatchReader has logical error on row groups with chunked columns
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: ARROW-3822
>                 URL: https://issues.apache.org/jira/browse/ARROW-3822
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++
>            Reporter: Wes McKinney
>            Assignee: Ben Kietzman
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.0.0
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> EDIT: https://github.com/apache/arrow/pull/3911#issuecomment-473679153
> We don't currently test that all data is iterated through when reading from a Parquet file where the result is chunked.



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