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Subject: Re: Tips to fix IDEA strange problem after updating master code
To: dev@flink.apache.org
References: <27D9BBDA-6E16-45EF-BACC-88F01F0338CD@immomo.com>
 <CBDBC221-F5A6-4EEB-80E7-2C34AF9DD67A@data-artisans.com>
From: Chesnay Schepler <chesnay@apache.org>
Message-ID: <0a94c2d8-7655-3e96-8da9-74d4720c4cb5@apache.org>
Date: Tue, 4 Jul 2017 11:19:47 +0200
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archived-at: Tue, 04 Jul 2017 09:19:54 -0000

You could also try the nuclear option of actually re-importing the 
project into intellij (as if you just downloaded it), that worked for me.

On 04.07.2017 11:11, Piotr Nowojski wrote:
> Maybe try
>
> $ mvn clean
>
> Before reimporting and restarting/invalidating caches in IntelliJ? Did you deactivate scala-2.10 profile in the IntelliJ?
>
> Piotrek
>
>
>
>> On Jul 4, 2017, at 11:05 AM, 郭健 <guo.jian@immomo.com> wrote:
>>
>> I have done all these but still got some issue in IDEA, especially in the flink-connector project.
>> ----
>>
>> On 7/4/17, 15:57, "Piotr Nowojski" <piotr@data-artisans.com> wrote:
>>
>>     Besides deactivating “scala-2.10” profile in the Intellij it might be necessary to:
>>     - reimport maven project:
>>     	1. Right click on root module: “flink-parent”
>>     	2. Maven
>>     	3. reimport
>>     - invalidate caches and restart: File -> Invalidate caches and restart -> invalidate /restart
>>     - rebuild whole project
>>
>>     I suspect that either activation of scala-2.10 by default comes from flink-scala and flick-scala-shell poms or it’s an artifact because you created/imported Intellij project when 2.10 was the default. If the first option is true, this PR: https://github.com/apache/flink/pull/4240 <https://github.com/apache/flink/pull/4240> might fix this issue.
>>
>>
>>     Another quirk that I encauntered is the compile error about  ILoopCompat class being defined twice in Intellij (works fine from console). This comes from flink-scala-shell/pom.xml, which defines two different source paths depending on Scala version:
>>
>>     <source>src/main/scala-${scala.binary.version}</source>
>>
>>     Such thing is not supported by Intellij and one have to manually remove one of the source directory (either 2.11 or 2.10) from the project settings.
>>
>>     Piotrek
>>
>>> On Jul 4, 2017, at 9:46 AM, Aljoscha Krettek <aljoscha@apache.org> wrote:
>>>
>>> Thanks for the hint!
>>>
>>>> On 4. Jul 2017, at 06:03, Ted Yu <yuzhihong@gmail.com> wrote:
>>>>
>>>> Looks like the picture didn't go thru.
>>>>
>>>> Mind using third party site ?
>>>>
>>>> Thanks
>>>>
>>>> On Mon, Jul 3, 2017 at 8:56 PM, Jark Wu <jark@apache.org> wrote:
>>>>
>>>>> Hi devs,
>>>>>
>>>>> Yesterday, I updated the master code which include [FLINK-7030]: Build
>>>>> with scala-2.11 by default. After that, I entered a strange problem with
>>>>> IDEA that many classes can't be found, and the project can't be
>>>>> built/compiled (in IDEA), but maven install worked good.
>>>>>
>>>>> After a series of attempts, I found that IDEA activate the scala-2.10
>>>>> profile by default which result in this problem. After deactivate
>>>>> scala-2.10 profile via  sidebar Maven Projects -> Profiles -> deactivate
>>>>> "scala-2.10" profile, and every works good again.
>>>>>
>>>>> [image: 内嵌图片 1]
>>>>>
>>>>> I share this tip in the dev list, because a lot of my colleagues have the
>>>>> same issues, and maybe many other Flink devs have the same problem too.
>>>>>
>>>>> BTW, I don't know why IDEA activate scala-2.10 by default, not sure it's a
>>>>> IDEA bug or the wrong profile setting somewhere.
>>>>>
>>>>>
>>>>> Regards,
>>>>> Jark Wu
>>>>>
>>
>>
>