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https://issues.apache.org/jira/browse/ARROW-6520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16927800#comment-16927800
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Joris Van den Bossche commented on ARROW-6520:
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[~wesmckinn] ah, I started looking at it as well. Sorry should have noted here
(only mentioned it on the standup). Now, I went away for dinner so didn't do
anything worthy of actual code yet, but I was planning to:
- accept `pyarrow.Array` in `pyarrow.array` and if a `type` is specified try to
`cast` it to that type (which will still mean that the example of the top post
will now fail, as we don't have a cast from var binary to fixed size binary).
This should then also fix `from_dict` using `pyarrow.array(.. type=type)` on
all input.
- switch the order of the `names` and `schema` keywords of the `pyarrow.table`
factory function to preserve backwards compatibility.
> [Python] Segmentation fault on writing tables with fixed size binary fields
> ----------------------------------------------------------------------------
>
> Key: ARROW-6520
> URL: https://issues.apache.org/jira/browse/ARROW-6520
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 0.14.1
> Environment: python(3.7.3), pyarrow(0.14.1), arrow-cpp(0.14.1),
> parquet-cpp(1.5.1), Arch Linux x86_64
> Reporter: Furkan Tektas
> Assignee: Wes McKinney
> Priority: Critical
> Labels: newbie
> Fix For: 0.15.0
>
>
> I'm not sure if this should be reported to Parquet or here.
> When I tried to serialize a pyarrow table with a fixed size binary field
> (holds 16 byte UUID4 information) to a parquet file, segmentation fault
> occurs.
> Here is the minimal example to reproduce:
> {{import pyarrow as pa}}
> {{from pyarrow import parquet as pq}}
> {{data = \{"col": pa.array([b"1234" for _ in range(10)])}}}
> {{fields = [("col", pa.binary(4))]}}
> {{schema = pa.schema(fields)}}
> {{table = pa.table(data, schema)}}
> {{pq.write_table(table, "test.parquet")}}
> {{segmentation fault (core dumped) ipython}}
>
> Yet, it works if I don't specify the size of the binary field.
> {{import pyarrow as pa}}
> {{from pyarrow import parquet as pq}}
> {{data = \{"col": pa.array([b"1234" for _ in range(10)])}}}
> {{fields = [("col", pa.binary())]}}
> {{schema = pa.schema(fields)}}
> {{table = pa.table(data, schema)}}
> {{pq.write_table(table, "test.parquet")}}
> Thanks,
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