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https://issues.apache.org/jira/browse/ARROW-15778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17497472#comment-17497472
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Antoine Pitrou commented on ARROW-15778:
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I'm not sure any form of negotiation is needed? The way it works at the IPC
level is that the writer emits data in whichever endianness it chooses (also
setting the corresponding metadata field to the appropriate value) and the
reader decides to byte-swap data is required. So it would work similarly at the
Flight level.
> [Java] Endianness field not emitted in IPC stream
> -------------------------------------------------
>
> Key: ARROW-15778
> URL: https://issues.apache.org/jira/browse/ARROW-15778
> Project: Apache Arrow
> Issue Type: Bug
> Components: Java
> Reporter: Antoine Pitrou
> Priority: Major
> Fix For: 8.0.0
>
>
> It seems the Java IPC writer implementation does not emit the Endianness
> information at all (making it Little by default). This complicates
> interoperability with the C++ IPC reader, which does read this information
> and acts on it to decide whether it needs to byteswap the incoming data.
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