I also support Herman's `SPARK-42884 Add Ammonite REPL integration` PR.

Thanks,
Dongjoon.


On Thu, Mar 23, 2023 at 7:51 AM Mridul Muralidharan <mri...@gmail.com>
wrote:

>
> Sounds good, thanks for clarifying !
>
> Regards,
> Mridul
>
> On Thu, Mar 23, 2023 at 9:09 AM Herman van Hovell <her...@databricks.com>
> wrote:
>
>> The goal of adding this, is to make it easy for a user to connect a scala
>> REPL to a Spark Connect server. Just like Spark shell makes it easy to work
>> with a regular Spark environment.
>>
>> It is not meant as a Spark shell replacement. They represent two
>> different modes of working with Spark, and they have very different API
>> surfaces (Connect being a subset of what regular Spark has to offer). I do
>> think we should consider using ammonite for Spark shell at some point,
>> since this has better UX and does not require us to fork a REPL. That
>> discussion is for another day though.
>>
>> I guess you can use it as an example of building an integration. In
>> itself I wouldn't call it that because I think this a key part of getting
>> started with connect, and/or doing debugging.
>>
>> On Thu, Mar 23, 2023 at 4:00 AM Mridul Muralidharan <mri...@gmail.com>
>> wrote:
>>
>>>
>>> What is unclear to me is why we are introducing this integration, how
>>> users will leverage it.
>>>
>>> * Are we replacing spark-shell with it ?
>>> Given the existing gaps, this is not the case.
>>>
>>> * Is it an example to showcase how to build an integration ?
>>> That could be interesting, and we can add it to external/
>>>
>>> Anything else I am missing ?
>>>
>>> Regards,
>>> Mridul
>>>
>>>
>>>
>>> On Wed, Mar 22, 2023 at 6:58 PM Herman van Hovell <her...@databricks.com>
>>> wrote:
>>>
>>>> Ammonite is maintained externally by Li Haoyi et al. We are including
>>>> it as a 'provided' dependency. The integration bits and pieces (1 file) are
>>>> included in Apache Spark.
>>>>
>>>> On Wed, Mar 22, 2023 at 7:53 PM Mridul Muralidharan <mri...@gmail.com>
>>>> wrote:
>>>>
>>>>>
>>>>> Will this be maintained externally or included into Apache Spark ?
>>>>>
>>>>> Regards ,
>>>>> Mridul
>>>>>
>>>>>
>>>>>
>>>>> On Wed, Mar 22, 2023 at 6:50 PM Herman van Hovell
>>>>> <her...@databricks.com.invalid> wrote:
>>>>>
>>>>>> Hi All,
>>>>>>
>>>>>> For Spark Connect Scala Client we are working on making the REPL
>>>>>> experience a bit nicer <https://github.com/apache/spark/pull/40515>.
>>>>>> In a nutshell we want to give users a turn key scala REPL, that works 
>>>>>> even
>>>>>> if you don't have a Spark distribution on your machine (through
>>>>>> coursier <https://get-coursier.io/>). We are using Ammonite
>>>>>> <https://ammonite.io/> instead of the standard scala REPL for this,
>>>>>> the main reason for going with Ammonite is that it is easier to 
>>>>>> customize,
>>>>>> and IMO has a superior user experience.
>>>>>>
>>>>>> Does anyone object to doing this?
>>>>>>
>>>>>> Kind regards,
>>>>>> Herman
>>>>>>
>>>>>>

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