[jira] [Assigned] (ARROW-1440) [Python] Segmentation fault after loading parquet file to pandas dataframe

["Wes McKinney (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-1440?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wes McKinney reassigned ARROW-1440:
-----------------------------------

    Assignee: Wes McKinney

> [Python] Segmentation fault after loading parquet file to pandas dataframe
> --------------------------------------------------------------------------
>
>                 Key: ARROW-1440
>                 URL: https://issues.apache.org/jira/browse/ARROW-1440
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: Python
>    Affects Versions: 0.6.0
>         Environment: ubuntu 16.04.2
>            Reporter: Jarno Seppanen
>            Assignee: Wes McKinney
>             Fix For: 0.7.0
>
>         Attachments: part-00000-6570e34b-b42c-4a39-8adf-21d3a97fb87d.snappy.parquet
>
>
> Reading the attached parquet file into pandas dataframe and then using the dataframe segfaults.
> {noformat}
> Python 3.5.3 |Continuum Analytics, Inc.| (default, Mar  6 2017, 11:58:13) 
> [GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux
> Type "help", "copyright", "credits" or "license" for more information.
> >>> 
> >>> import pyarrow
> >>> import pyarrow.parquet as pq
> >>> pyarrow.__version__
> '0.6.0'
> >>> import pandas as pd
> >>> pd.__version__
> '0.19.0'
> >>> df = pq.read_table('part-00000-6570e34b-b42c-4a39-8adf-21d3a97fb87d.snappy.parquet') \
> ...        .to_pandas()
> >>> len(df)
> 69
> >>> df.info()
> <class 'pandas.core.frame.DataFrame'>
> RangeIndex: 69 entries, 0 to 68
> Data columns (total 6 columns):
> label               69 non-null int32
> account_meta        69 non-null object
> features_type       69 non-null int32
> features_size       69 non-null int32
> features_indices    1 non-null object
> features_values     1 non-null object
> dtypes: int32(3), object(3)
> memory usage: 2.5+ KB
> >>> 
> >>> pd.concat([df, df])
> Segmentation fault (core dumped)
> {noformat}
> Actually just print(df) is enough to trigger the segfault



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