Kazuaki Ishizaki created ARROW-9417:
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Summary: [C++][IPC] size in message written in native endian
Key: ARROW-9417
URL: https://issues.apache.org/jira/browse/ARROW-9417
Project: Apache Arrow
Issue Type: Test
Components: C++
Reporter: Kazuaki Ishizaki
According to [this
specification|https://github.com/apache/arrow/blob/master/docs/source/format/Columnar.rst],
{{metadata length}} and {{footer size}} should be written in little endian
However, the current implementation writes them in native endian.
On little-endian
{code}
00000000: 41 52 52 4f 57 31 00 00 ff ff ff ff 88 07 00 00 10 00 00 00 00 00 0a
00 0e 00 06 00 05 00 08 00 ARROW1..........................
...
00005700: 62 6f 6f 6c 5f 6e 75 6c 6c 61 62 6c 65 00 00 00 d0 07 00 00 41 52 52
4f 57 31 bool_nullable.......ARROW1
{code}
On big-endian
{code}
00000000: 41 52 52 4f 57 31 00 00 ff ff ff ff 00 00 07 90 10 00 00 00 00 00 0a
00 0e 00 06 00 05 00 08 00 ARROW1..........................
~~~~~~~~~~~
...
00005700: 04 00 00 00 0d 00 00 00 62 6f 6f 6c 5f 6e 75 6c 6c 61 62 6c 65 00 00
00 00 00 07 d0 41 52 52 4f ........bool_nullable.......ARRO
~~~~~~~~~~~
00005720: 57 31
{code}
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