Hi David,

Thanks for this useful information. This unblocked and now locally build is
successful which was not the case earlier.
I have a few more questions though.

   -  Are there any requirements for the maven and / or plugin version ?
   - Another error says *Failure to find org.apache.kafka:kafka_2.12:jar. *

*[INFO] [INFO] flink-connector-kafka-0.9 .......................... FAILURE
[ 0.014 s]*

Thanks,
Milind

On Sun, Dec 25, 2022 at 1:24 AM David Anderson <dander...@apache.org> wrote:

> Flink only officially supports Scala 2.12 up to 2.12.7 -- you are running
> into the binary compatibility check, intended to keep you from unknowingly
> running into problems. You can disable japicmp, and everything will
> hopefully work:
>
> mvn clean install -DskipTests -Djapicmp.skip -Dscala-2.12
> -Dscala.version=2.12.16
>
> See https://issues.apache.org/jira/browse/FLINK-12461 for more info.
>
> Regards,
> David
>
> On Fri, Dec 23, 2022 at 6:55 AM Milind Vaidya <kava...@gmail.com> wrote:
>
>> Hi
>>
>> First of all, I do understand that I am using a very old version. But as
>> of now the team can not help it. We need to move to Scala 2.12 first and
>> then we will move forward towards the latest version of Flink.
>>
>> I have added following things to main pom.xml
>>
>>  <scala.version>2.11.12</scala.version>
>> <scala.binary.version>2.11</scala.binary.version>
>>
>> Under Scala-2.11
>>
>> removed following lines
>>                            <property>
>>                                    <name>!scala-2.12</name>
>>                             </property>
>>
>> Added
>>                                <activeByDefault>false</activeByDefault>
>>
>>
>> Under Scala-2.12
>>
>> Added
>>
>> <activeByDefault>false</activeByDefault>
>>
>> Command :
>>
>> mvn clean install -DskipTests -Dscala-2.12 -Dscala.version=2.12.16
>>
>> Error :
>>
>> Failed to execute goal
>> com.github.siom79.japicmp:japicmp-maven-plugin:0.11.0:cmp (default) on
>> project flink-metrics-core: Execution default of goal
>> com.github.siom79.japicmp:japicmp-maven-plugin:0.11.0:cmp failed: A
>> required class was missing while executing
>> com.github.siom79.japicmp:japicmp-maven-plugin:0.11.0:cmp:
>> javax/xml/bind/JAXBException
>>
>>
>> Is there any set of instructions to follow while compiling a flink
>> version for Scala 2.12 ?
>>
>>
>>
>

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