Mark Waddle created ARROW-8967:
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Summary: [Python] [Parquet] Table.to_pandas() fails to convert
valid TIMESTAMP_MILLIS fails to convert to pandas timestamp
Key: ARROW-8967
URL: https://issues.apache.org/jira/browse/ARROW-8967
Project: Apache Arrow
Issue Type: Bug
Components: Python
Affects Versions: 0.17.0
Reporter: Mark Waddle
reading a parquet file with a valid TIMESTAMP_MILLIS value of -61552915200000
(0019-06-20) results in the following error
{noformat}
File "pyarrow/array.pxi", line 587, in pyarrow.lib._PandasConvertible.to_pandas
File "pyarrow/table.pxi", line 1640, in pyarrow.lib.Table._to_pandas
File
"/Users/mark/.local/share/virtualenvs/parquetpy-BNIqCtDj/lib/python3.7/site-packages/pyarrow/pandas_compat.py",
line 766, in table_to_blockmanager
blocks = _table_to_blocks(options, table, categories, ext_columns_dtypes)
File
"/Users/mark/.local/share/virtualenvs/parquetpy-BNIqCtDj/lib/python3.7/site-packages/pyarrow/pandas_compat.py",
line 1102, in _table_to_blocks
list(extension_columns.keys()))
File "pyarrow/table.pxi", line 1107, in pyarrow.lib.table_to_blocks
File "pyarrow/error.pxi", line 85, in pyarrow.lib.check_status
pyarrow.lib.ArrowInvalid: Casting from timestamp[ms] to timestamp[ns] would
result in out of bounds timestamp: -61552915200000
{noformat}
as it stands there is no way to read this file
i would like to be able to choose the timestamp unit when reading, much like
you can when writing.
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