Eric Erhardt created ARROW-5019:
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Summary: [C#] ArrowStreamWriter doesn't work on a non-seekable
stream
Key: ARROW-5019
URL: https://issues.apache.org/jira/browse/ARROW-5019
Project: Apache Arrow
Issue Type: Bug
Components: C#
Reporter: Eric Erhardt
Assignee: Eric Erhardt
When writing to a non-seekable .NET Stream (like a network/socket stream),
ArrowStreamWriter will throw an exception:
{code:java}
Exception thrown: 'System.NotSupportedException' in System.Net.Sockets.dll
This stream does not support seek operations.
{code}
The reason this throws is because we are using `BastStream.Position` in the
writer to calculate the length of bytes that we've written to the stream. We
don't need to use the Position in order to calculate the lengths. We should be
able to write an Arrow RecordBatch to a NetworkStream directly. Today, we need
to write to a MemoryStream, and then copy the MemoryStream to the NetworkStream.
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