Andre Kohn created ARROW-18423:
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Summary: [Python] Expose reading a schema from an IPC message
Key: ARROW-18423
URL: https://issues.apache.org/jira/browse/ARROW-18423
Project: Apache Arrow
Issue Type: Improvement
Components: Python
Reporter: Andre Kohn
Pyarrow currently does not implement reading the Arrow schema from an IPC
message.
[https://github.com/apache/arrow/blob/80b389efe902af376a85a8b3740e0dbdc5f80900/python/pyarrow/ipc.pxi#L1094]
We'd like to consume Arrow IPC stream data like the following:
```
schema_msg = pyarrow.ipc.read_message(result_iter.next().data)
schema = pyarrow.ipc.read_schema(schema_msg)
for batch_data in result_iter:
batch_msg = pyarrow.ipc.read_message(batch_data.data)
batch = pyarrow.ipc.read_record_batch(batch_msg, schema)
```
The associated (tiny) PR on GitHub implements this reading by binding the
existing C++ function.
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