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https://issues.apache.org/jira/browse/ARROW-10617?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17235188#comment-17235188
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Tao He commented on ARROW-10617:
--------------------------------
The issue was found on Ubuntu 20.02, where the `libarrow-dev-1.0.1-1` is
installed using `apt-get` (using apache-arrow's ppa), and the pyarrow-1.0.1 is
installed by building from source using `pip3 install --no-binary pyarrow
pyarrow==1.0.1`.
I was also surprised that the prebuilt wheels cannot reproduces the issue. I
will double-check it later.
> [Python] RecordBatchStreamReader's iterator doesn't work with python 3.8
> ------------------------------------------------------------------------
>
> Key: ARROW-10617
> URL: https://issues.apache.org/jira/browse/ARROW-10617
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 1.0.1
> Reporter: Tao He
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 10m
> Remaining Estimate: 0h
>
> The following example code doesn't work with python 3.8:
> {code}
> import pyarrow as pa
> data = [
> pa.array([1, 2, 3, 4]),
> pa.array(['foo', 'bar', 'baz', None]),
> pa.array([True, None, False, True])
> ]
> batch = pa.record_batch(data, names=['f0', 'f1', 'f2'])
> sink = pa.BufferOutputStream()
> writer = pa.ipc.new_stream(sink, batch.schema)
> for i in range(5):
> writer.write_batch(batch)
> writer.close()
> buf = sink.getvalue()
> reader = pa.ipc.open_stream(buf)
> [i for i in reader]
> {code}
> It will raise the following runtime error:
> {{StopIteration Traceback (most recent call last)}}
> {{ /usr/local/lib/python3.8/dist-packages/pyarrow/ipc.pxi in
> pyarrow.lib._CRecordBatchReader.read_next_batch()}}
> {{StopIteration:}}
> {{During handling of the above exception, another exception occurred:}}
> {{RuntimeError Traceback (most recent call last)}}
> {{ <ipython-input-7-225bed213dc7> in <module>}}
> {{ 18 reader = pa.ipc.open_stream(buf)}}
> {{ 19}}
> {{ ---> 20 [i for i in reader]}}
> {{<ipython-input-7-225bed213dc7> in <listcomp>(.0)}}
> {{ 18 reader = pa.ipc.open_stream(buf)}}
> {{ 19}}
> {{ ---> 20 [i for i in reader]}}
> {{/usr/local/lib/python3.8/dist-packages/pyarrow/ipc.pxi in __iter__()}}
> {{RuntimeError: generator raised StopIteration}}
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