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From: Piotr Nowojski <piotr@data-artisans.com>
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Subject: Re: Tips to fix IDEA strange problem after updating master code
Date: Tue, 4 Jul 2017 11:11:21 +0200
References: <27D9BBDA-6E16-45EF-BACC-88F01F0338CD@immomo.com>
To: dev@flink.apache.org
In-Reply-To: <27D9BBDA-6E16-45EF-BACC-88F01F0338CD@immomo.com>
Message-Id: <CBDBC221-F5A6-4EEB-80E7-2C34AF9DD67A@data-artisans.com>
archived-at: Tue, 04 Jul 2017 09:11:31 -0000

Maybe try=20

$ mvn clean=20

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, =E9=83=AD=E5=81=A5 <guo.jian@immomo.com> =
wrote:
>=20
> I have done all these but still got some issue in IDEA, especially in =
the flink-connector project.
> ----
>=20
> On 7/4/17, 15:57, "Piotr Nowojski" <piotr@data-artisans.com> wrote:
>=20
>    Besides deactivating =E2=80=9Cscala-2.10=E2=80=9D profile in the =
Intellij it might be necessary to:
>    - reimport maven project:
>    	1. Right click on root module: =E2=80=9Cflink-parent=E2=80=9D
>    	2. Maven
>    	3. reimport
>    - invalidate caches and restart: File -> Invalidate caches and =
restart -> invalidate /restart
>    - rebuild whole project
>=20
>    I suspect that either activation of scala-2.10 by default comes =
from flink-scala and flick-scala-shell poms or it=E2=80=99s 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.
>=20
>=20
>    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:
>=20
>    <source>src/main/scala-${scala.binary.version}</source>
>=20
>    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.
>=20
>    Piotrek
>=20
>> On Jul 4, 2017, at 9:46 AM, Aljoscha Krettek <aljoscha@apache.org> =
wrote:
>>=20
>> Thanks for the hint!
>>=20
>>> On 4. Jul 2017, at 06:03, Ted Yu <yuzhihong@gmail.com> wrote:
>>>=20
>>> Looks like the picture didn't go thru.
>>>=20
>>> Mind using third party site ?
>>>=20
>>> Thanks
>>>=20
>>> On Mon, Jul 3, 2017 at 8:56 PM, Jark Wu <jark@apache.org> wrote:
>>>=20
>>>> Hi devs,
>>>>=20
>>>> 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.
>>>>=20
>>>> 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.
>>>>=20
>>>> [image: =E5=86=85=E5=B5=8C=E5=9B=BE=E7=89=87 1]
>>>>=20
>>>> 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.
>>>>=20
>>>> 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.
>>>>=20
>>>>=20
>>>> Regards,
>>>> Jark Wu
>>>>=20
>>=20
>=20
>=20
>=20