[ARROW-1067] Write to parquet with InMemoryOutputStream

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Not A Problem
• Affects Version/s: 0.4.0
• Component/s: Python
• Labels: documentation
• Environment: Debian 8.5, Anaconda Python 3.6, pyarrow 0.4.0a0
• External issue URL: https://github.com/apache/arrow/issues/16657
• Assignee: Unassigned
• Reporter: Chase Slater
• Created: 24/May/17 14:04
• Updated: 11/Jan/23 07:12
• Resolved: 24/May/17 22:03

Description

When I run the following (from the docs) python crashes during the pq.write_table statement. How would I go about writing a parquet file to a file buffer (e.g. for use with Azure Data Lake)?

import pyarrow as pa
import pyarrow.parquet as pq
table = pa.Table.from_pandas(df, timestamps_to_ms=True)
with adl.open(my_file_path, 'wb') as f:
    output = pa.InMemoryOutputStream()
    pq.write_table(table, output) # crashes here
    f.write(output.get_result().to_pybytes())