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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