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https://issues.apache.org/jira/browse/ARROW-7939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17072279#comment-17072279
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Wes McKinney commented on ARROW-7939:
-------------------------------------
I'll try to look at this tomorrow to see if I can learn something about what's
up
> [Python] crashes when reading parquet file compressed with snappy
> -----------------------------------------------------------------
>
> Key: ARROW-7939
> URL: https://issues.apache.org/jira/browse/ARROW-7939
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 0.16.0
> Environment: Windows 7
> python 3.6.9
> pyarrow 0.16 from conda-forge
> Reporter: Marc Bernot
> Assignee: Wes McKinney
> Priority: Major
> Fix For: 0.17.0
>
>
> When I installed pyarrow 0.16, some parquet files created with pyarrow 0.15.1
> would make python crash. I drilled down to the simplest example I could find.
> It happens that some parquet files created with pyarrow 0.16 cannot either be
> read back. The example below works fine with arrays_ok but python crashes
> with arrays_nok (and as soon as they are at least three different values
> apparently).
> Besides, it works fine with 'none', 'gzip' and 'brotli' compression. The
> problem seems to happen only with snappy.
> {code:python}
> import pyarrow.parquet as pq
> import pyarrow as pa
> arrays_ok = [[0,1]]
> arrays_ok = [[0,1,1]]
> arrays_nok = [[0,1,2]]
> table = pa.Table.from_arrays(arrays_nok,names=['a'])
> pq.write_table(table,'foo.parquet',compression='snappy')
> pq.read_table('foo.parquet')
> {code}
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