Eric Erhardt created ARROW-5908: ----------------------------------- Summary: [C#] ArrowStreamWriter doesn't align buffers to 8 bytes Key: ARROW-5908 URL: https://issues.apache.org/jira/browse/ARROW-5908 Project: Apache Arrow Issue Type: Improvement Components: C# Reporter: Eric Erhardt Assignee: Eric Erhardt
When writing RecordBatches using ArrowStreamWriter, if the ArrowBuffers being written aren't all 8 byte aligned, the serialized RecordBatch won't conform to the Arrow specification. This leads to other languages' readers to throw an error when reading Arrow streams written by the C# writer. For example, if reading the stream from Python or C++, an error is raised here: [https://github.com/apache/arrow/blob/f77c3427ca801597b572fb197b92b0133269049b/cpp/src/arrow/ipc/reader.cc#L107-L110] A similar error is raised when Java tries to read the stream. We should be ensuring that the buffers being written to the stream are padded to 8 bytes, no matter their length, as specified in [https://arrow.apache.org/docs/format/Layout.html#requirements-goals-and-non-goals] {quote} * It is required to have all the contiguous memory buffers in an IPC payload aligned at 8-byte boundaries. In other words, each buffer must start at an aligned 8-byte offset. Additionally, each buffer should be padded to a multiple of 8 bytes.{quote} -- This message was sent by Atlassian JIRA (v7.6.3#76005)