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[jira] [Created] (ARROW-2626) pandas ArrowInvalid message should include failing column name


Louis Potok created ARROW-2626:
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             Summary: pandas ArrowInvalid message should include failing column name
                 Key: ARROW-2626
                 URL: https://issues.apache.org/jira/browse/ARROW-2626
             Project: Apache Arrow
          Issue Type: Improvement
            Reporter: Louis Potok


When writing a pandas dataframe to feather using its to_feather method, sometimes a single column's conversion fails in pandas_compat.convert_column, which leads the whole method to fail. The error message should include the name of the column that failed for easier debugging.

 

Eg instead of:

 
{code:java}
ArrowInvalid: Error converting from Python objects to String/UTF8: Got Python object of type int but can only handle these types: str, bytes.
 
{code}
Throw:
{code:java}
ArrowInvalid: Error converting from Python objects to String/UTF8: Got Python object of type int but can only handle these types: str, bytes. (column "user_id")

{code}
 

Originally opened on Github Issues: https://github.com/apache/arrow/issues/2072



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