adding rsockets support into JDK

[Paul Sandoz]

Hi Lucy,

For now i will just focus on the Summary and Description as those are the most important. Alan et. al. are more qualified than I to talk about the specifics.

I would like to suggest an alternative title:

  Socket API for Remote Direct Memory Access (RDMA)

with the proposed summary:

"Enhance the Java Socket API to support Remote Direct Memory Access (RDMA) using the rsocket protocol on the Linux-based platforms."

In the Motivation section you could expand the last sentence to:

"To improve this, we propose to add rsocket, a protocol over Remote Direct Memory Access (RDMA) that permits high-throughput, low-latency networking.”

s/For HPC and.../High Performance Computing (HPC)…/

Paul.


> On May 16, 2018, at 9:03 PM, Lu, Yingqi <yingqi.lu at intel.com> wrote:
> 
> Hi Paul,
> 
> Thank you for your email! Looking forward to your feedback!
> 
> Thanks,
> Lucy
> 
>> -----Original Message-----
>> From: Paul Sandoz [mailto:paul.sandoz at oracle.com]
>> Sent: Wednesday, May 16, 2018 4:47 PM
>> To: Lu, Yingqi <yingqi.lu at intel.com>
>> Cc: Alan Bateman <Alan.Bateman at oracle.com>; nio-dev at openjdk.java.net;
>> Viswanathan, Sandhya <sandhya.viswanathan at intel.com>; Aundhe, Shirish
>> <shirish.aundhe at intel.com>; Kaczmarek, Eric <eric.kaczmarek at intel.com>
>> Subject: Re: adding rsockets support into JDK
>> 
>> 
>> 
>>> On May 16, 2018, at 12:26 PM, Lu, Yingqi <yingqi.lu at intel.com> wrote:
>>> 
>>> Hi All,
>>> 
>>> I have just submitted the initial JEP draft at
>> https://bugs.openjdk.java.net/browse/JDK-8203314 and linked it to the bug
>> JDK-8195160.
>>> 
>> 
>> Great!
>> 
>> 
>>> Do I also need to submit a PDF version to jep-submit at openjdk.java.net or
>> jdk-dev email list?
>>> 
>> 
>> When you think the JEP is of suitable draft quality send an email to jdk-
>> dev at openjdk.java.net (e.g. titled Draft JEP: <title>) to solicit wider comments
>> beyond this list. This is an informal but encouraged polite step to inform the
>> wider community, where further comments can be taken into account, and it
>> will reduce potential surprises for the next formal step of JEP submission.
>> 
>> 
>>> Please review the JEP draft and let me know your comments and feedback.
>>> 
>> 
>> I shall do so this week.
>> 
>> Thanks,
>> Paul.
>> 
>>> Thanks you!!
>>> 
>>> Lucy
>>> 
>>>> -----Original Message-----
>>>> From: nio-dev [mailto:nio-dev-bounces at openjdk.java.net] On Behalf Of
>>>> Lu, Yingqi
>>>> Sent: Sunday, May 13, 2018 7:48 AM
>>>> To: Alan Bateman <Alan.Bateman at oracle.com>
>>>> Cc: nio-dev at openjdk.java.net; Viswanathan, Sandhya
>>>> <sandhya.viswanathan at intel.com>; Aundhe, Shirish
>>>> <shirish.aundhe at intel.com>; Kaczmarek, Eric
>>>> <eric.kaczmarek at intel.com>
>>>> Subject: Re: adding rsockets support into JDK
>>>> 
>>>> Yes! Will submit early next week. Thank you for the reminder.
>>>> 
>>>> Thanks,
>>>> Lucy
>>>> 
>>>> Sent from my iPhone
>>>> 
>>>>> On May 13, 2018, at 1:11 AM, Alan Bateman <Alan.Bateman at oracle.com>
>>>> wrote:
>>>>> 
>>>>>> On 11/05/2018 17:37, Lu, Yingqi wrote:
>>>>>> Hi Alan,
>>>>>> 
>>>>>> Thank you very much for your feedback!
>>>>>> 
>>>>>> I agree that jdk.net.RdmaSocketImplFactory is not necessary
>>>>>> anymore. I
>>>> will remove it in next version.
>>>>>> 
>>>>>> I will remove the inheritance from
>>>> SocketChannelImpl/ServerSocketChannelImpl, replace them with
>>>> SocketChannel/ServerSocketChannel. My initial thought was to avoid
>>>> the code duplication, but I totally agree with you on your concern
>>>> for future maintenance.
>>>>>> 
>>>>>> I will also make other changes following your suggestions and start
>>>>>> to add
>>>> test cases. I will start from the examples of regular sockets and
>>>> socket channels and add ones specific to RDMA.
>>>>> Are you still planning to submit a JEP?
>>>>> 
>>>>> -Alan
>