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https://issues.apache.org/jira/browse/ARROW-1446?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wes McKinney resolved ARROW-1446.
---------------------------------
Resolution: Fixed
Issue resolved by pull request 1055
[https://github.com/apache/arrow/pull/1055]
> Python: Writing more than 2^31 rows from pandas dataframe causes row count
> overflow error
> -----------------------------------------------------------------------------------------
>
> Key: ARROW-1446
> URL: https://issues.apache.org/jira/browse/ARROW-1446
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 0.6.0
> Reporter: James Porritt
> Assignee: Wes McKinney
> Fix For: 0.7.0
>
>
> I have the following code:
> {code}
> import pyarrow
> import pyarrow.parquet as pq
> client = pyarrow.HdfsClient("<host>", <port>, "<user>", driver='libhdfs3')
> abc_table = client.read_parquet('<source parquet>', nthreads=16)
> abc_df = abc_table.to_pandas()
> abc_table = pyarrow.Table.from_pandas(abc_df)
> with client.open('<target parquet>', 'wb') as f:
> pq.write_table(abc_table, f)
> {code}
> <source parquet> contains 2497301128 rows.
> During the write however I get the following error:
> {format}
> Traceback (most recent call last):
> File "pyarrow_cluster.py", line 29, in <module>
> main()
> File "pyarrow_cluster.py", line 26, in main
> pq.write_table(nmi_table, f)
> File "<home
> dir>/miniconda2/envs/parquet/lib/python2.7/site-packages/pyarrow/parquet.py",
> line 796, in write_table
> writer.write_table(table, row_group_size=row_group_size)
> File "_parquet.pyx", line 663, in pyarrow._parquet.ParquetWriter.write_table
> File "error.pxi", line 72, in pyarrow.lib.check_status
> pyarrow.lib.ArrowIOError: Written rows: -1797666168 != expected rows:
> 2497301128in the current column chunk
> {format}
> The number of written rows specified suggests a 32-bit signed integer has
> overflowed.
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