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https://issues.apache.org/jira/browse/ARROW-1588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16209934#comment-16209934
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Jacques Nadeau commented on ARROW-1588:
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Java is currently big-endian. See [1] and [2]
[1]
https://github.com/apache/arrow/blob/master/java/vector/src/main/java/org/apache/arrow/vector/util/DecimalUtility.java#L144
[2]
https://docs.oracle.com/javase/7/docs/api/java/math/BigInteger.html#BigInteger(byte[])
I agree that we should switch to little endian. Arrow should prioritize the cpu
friendly format.
> [C++/Format] Harden Decimal Format
> ----------------------------------
>
> Key: ARROW-1588
> URL: https://issues.apache.org/jira/browse/ARROW-1588
> Project: Apache Arrow
> Issue Type: Improvement
> Components: C++, Format
> Affects Versions: 0.7.0
> Reporter: Phillip Cloud
> Assignee: Phillip Cloud
> Fix For: 0.8.0
>
>
> We should finalize and harden the decimal format. The remaining issues are
> officially writing down the choice of making every decimal value 16 bytes and
> byte order.
> For byte order we'll need to run some benchmarks to compare little endian vs
> big endian. I plan to work on this over the next week or two.
> [[email protected]] [~wesmckinn] If there are any additional items you'd
> like to see addressed here please chime in.
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