JDK-17 support?

[Chris Nuernberger <ch...@techascent.com>]

Are there plans to support JDK-17?  They have removed the unsafe class or
at least most of its methods so for example I believe the MemoryUtil
<https://github.com/apache/arrow/blob/8e43f23dcc6a9e630516228f110c48b64d13cec6/java/memory/memory-core/src/main/java/org/apache/arrow/memory/util/MemoryUtil.java>
class
cannot work the same way - as opposed to going through unsafe to convert
between integers and nio buffers you have to go through
MemoryAddress,Segment and friends.

RE: JDK-17 support?

[Welly Tambunan <co...@wellytambunan.com>]

Hi Jacques,

I recently working on this JDK-17 stuff. I just getting started work on my weekend for this

https://github.com/weltam/arrow/tree/graviton2/graviton2

I do this because previously I managed to port the dremio-oss to graviton2 ( ec2 arm processor from aws)

A couple of rough stuff from the previous experiment is in here

https://github.com/weltam/dremio-oss/tree/graviton2/graviton2

Feel free to check it out.

Cheers

Welly Tambunan

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From: Jacques Nadeau <ja...@apache.org>
Sent: 23 October 2021 5:33
To: user@arrow.apache.org
Subject: Re: JDK-17 support?

I don't think anyone is working on this. It would be great for someone to pick up. I would suspect that Netty already has a cross jdk approach to this that we might be able to  either leverage or be inspired by.

I have wondered whether the jdk17 version should be separate for the vector library, based on the vector apis. It'd be great if someone evaluated the benefit/costs of doing such.

On Fri, Oct 22, 2021 at 1:59 PM Chris Nuernberger <ch...@techascent.com>> wrote:
Are there plans to support JDK-17?  They have removed the unsafe class or at least most of its methods so for example I believe the MemoryUtil<https://github.com/apache/arrow/blob/8e43f23dcc6a9e630516228f110c48b64d13cec6/java/memory/memory-core/src/main/java/org/apache/arrow/memory/util/MemoryUtil.java> class cannot work the same way - as opposed to going through unsafe to convert between integers and nio buffers you have to go through MemoryAddress,Segment and friends.

Re: JDK-17 support?

[Jacques Nadeau <ja...@apache.org>]

I don't think anyone is working on this. It would be great for someone to
pick up. I would suspect that Netty already has a cross jdk approach to
this that we might be able to  either leverage or be inspired by.

I have wondered whether the jdk17 version should be separate for the vector
library, based on the vector apis. It'd be great if someone evaluated the
benefit/costs of doing such.

On Fri, Oct 22, 2021 at 1:59 PM Chris Nuernberger <ch...@techascent.com>
wrote:

> Are there plans to support JDK-17?  They have removed the unsafe class or
> at least most of its methods so for example I believe the MemoryUtil
> <https://github.com/apache/arrow/blob/8e43f23dcc6a9e630516228f110c48b64d13cec6/java/memory/memory-core/src/main/java/org/apache/arrow/memory/util/MemoryUtil.java> class
> cannot work the same way - as opposed to going through unsafe to convert
> between integers and nio buffers you have to go through
> MemoryAddress,Segment and friends.
>