[ARROW-1276] Cannot serializer empty DataFrame to parquet

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.5.0
• Fix Version/s: 0.6.0
• Component/s: Python
• External issue URL: https://github.com/apache/arrow/issues/17195
• Assignee: Marco Neumann
• Reporter: Marco Neumann
• Created: 26/Jul/17 09:44
• Updated: 11/Jan/23 07:13
• Resolved: 28/Jul/17 14:29

Description

The following code fails with pyarrow.lib.ArrowInvalid: Invalid: chunk size per row_group must be greater than 0 but should not:

import pandas as pd
import pyarrow as pa
import pyarrow.parquet as pq

df = pd.DataFrame({'x': pd.Series([], dtype=int)})
table = pa.Table.from_pandas(df)
buf = pa.InMemoryOutputStream()
pq.write_table(table, buf)

I have a test and a fix prepared and will upstream both in the upcoming days.