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https://issues.apache.org/jira/browse/CASSANDRA-13326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15924074#comment-15924074
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Jason Brown commented on CASSANDRA-13326:
-----------------------------------------
tbh, we really don't support non-x86/64 architectures. Further, none of the
current committers/maintainers has access to these kinds of boxes, so it's hard
to verify. [~snazy] states it in CASSANDRA-13300:
{quote}
Supporting another CPU architecture is more than just updating a jar file and
just starting C* or running unit tests or dtests. We do a lot of stuff in our
code base, which is thoroughly tested on x64 CPUs (looking at you, memory
fences, volatiles, unsafe). Additionally, we pull in a couple of 3rd party
libraries, which are probably only tested on x64 CPUs and are not under our
control. Further, there are probably non-neglectible hardware differences
between x64 and PPC affecting I/O (disk and network).
{quote}
This being said, if you submit a patch that is small in scope which doesn't
affect the execution of cassandra on the currently supported architectures, we
can consider it if it unblocks you.
> Support unaligned memory access for AArch64
> ---------------------------------------------
>
> Key: CASSANDRA-13326
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13326
> Project: Cassandra
> Issue Type: Improvement
> Components: Observability, Testing
> Environment: ARM Cortex-A57@2.1GHz (Hisilicon Taishan/ Cavium
> ThunderX)
> Ubuntu 16.04.1 LTS
> Reporter: yuqi
> Priority: Minor
> Fix For: 3.10
>
>
> ARMv8 (AArch64) supports unaligned memory access. The patch will enable it
> and will improve performance on AArch64
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