Do the tests expect a particular console output order? That would annoy
them. ;) You could sort the expected and output lines, then diff...


*Dean Wampler, Ph.D.*

*VP, Fast Data Engineering at Lightbend*
Author: Programming Scala, 2nd Edition
<http://shop.oreilly.com/product/0636920033073.do>, Fast Data Architectures
for Streaming Applications
<http://www.oreilly.com/data/free/fast-data-architectures-for-streaming-applications.csp>,
and other content from O'Reilly
@deanwampler <http://twitter.com/deanwampler>
http://polyglotprogramming.com
https://github.com/deanwampler

On Thu, Jun 7, 2018 at 5:09 PM, Holden Karau <hol...@pigscanfly.ca> wrote:

> If the difference is the order of the welcome message I think that should
> be fine.
>
> On Thu, Jun 7, 2018, 4:43 PM Dean Wampler <deanwamp...@gmail.com> wrote:
>
>> I'll point the Scala team to this issue, but it's unlikely to get fixed
>> any time soon.
>>
>> dean
>>
>>
>> *Dean Wampler, Ph.D.*
>>
>> *VP, Fast Data Engineering at Lightbend*
>> Author: Programming Scala, 2nd Edition
>> <http://shop.oreilly.com/product/0636920033073.do>, Fast Data
>> Architectures for Streaming Applications
>> <http://www.oreilly.com/data/free/fast-data-architectures-for-streaming-applications.csp>,
>> and other content from O'Reilly
>> @deanwampler <http://twitter.com/deanwampler>
>> http://polyglotprogramming.com
>> https://github.com/deanwampler
>>
>> On Thu, Jun 7, 2018 at 4:27 PM, DB Tsai <d_t...@apple.com> wrote:
>>
>>> Thanks Felix for bringing this up.
>>>
>>> Currently, in Scala 2.11.8, we initialize the Spark by overriding
>>> loadFIles() before REPL sees any file since there is no good hook in Scala
>>> to load our initialization code.
>>>
>>> In Scala 2.11.12 and newer version of the Scala 2.12.x, loadFIles()
>>> method was removed.
>>>
>>> Alternatively, one way we can do in the newer version of Scala is by
>>> overriding initializeSynchronous() suggested by Som Snytt; I have a working
>>> PR with this approach,
>>> https://github.com/apache/spark/pull/21495 , and this approach should
>>> work for older version of Scala too.
>>>
>>> However, in the newer version of Scala, the first thing that the REPL
>>> calls is printWelcome, so in the newer version of Scala, welcome message
>>> will be shown and then the URL of the SparkUI in this approach. This will
>>> cause UI inconsistencies between different versions of Scala.
>>>
>>> We can also initialize the Spark in the printWelcome which I feel more
>>> hacky. It will only work for newer version of Scala since in order version
>>> of Scala, printWelcome is called in the end of the initialization process.
>>> If we decide to go this route, basically users can not use Scala older than
>>> 2.11.9.
>>>
>>> I think this is also a blocker for us to move to newer version of Scala
>>> 2.12.x since the newer version of Scala 2.12.x has the same issue.
>>>
>>> In my opinion, Scala should fix the root cause and provide a stable hook
>>> for 3rd party developers to initialize their custom code.
>>>
>>> DB Tsai  |  Siri Open Source Technologies [not a contribution]  |  
>>> Apple, Inc
>>>
>>> > On Jun 7, 2018, at 6:43 AM, Felix Cheung <felixcheun...@hotmail.com>
>>> wrote:
>>> >
>>> > +1
>>> >
>>> > Spoke to Dean as well and mentioned the problem with 2.11.12
>>> https://github.com/scala/bug/issues/10913
>>> >
>>> > _____________________________
>>> > From: Sean Owen <sro...@gmail.com>
>>> > Sent: Wednesday, June 6, 2018 12:23 PM
>>> > Subject: Re: Scala 2.12 support
>>> > To: Holden Karau <hol...@pigscanfly.ca>
>>> > Cc: Dean Wampler <deanwamp...@gmail.com>, Reynold Xin <
>>> r...@databricks.com>, dev <dev@spark.apache.org>
>>> >
>>> >
>>> > If it means no change to 2.11 support, seems OK to me for Spark 2.4.0.
>>> The 2.12 support is separate and has never been mutually compatible with
>>> 2.11 builds anyway. (I also hope, suspect that the changes are minimal;
>>> tests are already almost entirely passing with no change to the closure
>>> cleaner when built for 2.12)
>>> >
>>> > On Wed, Jun 6, 2018 at 1:33 PM Holden Karau <hol...@pigscanfly.ca>
>>> wrote:
>>> > Just chatted with Dean @ the summit and it sounds like from Adriaan
>>> there is a fix in 2.13 for the API change issue that could be back ported
>>> to 2.12 so how about we try and get this ball rolling?
>>> >
>>> > It sounds like it would also need a closure cleaner change, which
>>> could be backwards compatible but since it’s such a core component and we
>>> might want to be cautious with it, we could when building for 2.11 use the
>>> old cleaner code and for 2.12 use the new code so we don’t break anyone.
>>> >
>>> > How do folks feel about this?
>>> >
>>> >
>>> >
>>>
>>>
>>

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