Build error with Flink

[Suneel Marthi]

Trying to build the project via 'mvn clean package', the build fails always
with the folllowing error:

[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:3.1:compile
(default-compile) on project flink-java: Compilation failure
[ERROR]
/Users/smarthi/opensourceprojects/incubator-flink/flink-java/src/main/java/org/apache/flink/api/java/operators/CoGroupOperator.java:[56,8]
org.apache.flink.api.java.operators.CoGroupOperator is not abstract and
does not override abstract method
translateToDataFlow(org.apache.flink.api.common.operators.Operator<IN1>,org.apache.flink.api.common.operators.Operator<IN2>)
in org.apache.flink.api.java.operators.TwoInputOperator


Am I missing something here?

[Stephan Ewen]

Hey Suneel!

Which branch are you referring to?

Also, which Java Version do you use? Java 6 (earlier versions) has some
limitations to matching generic method signatures and cannot identify the
correct overriding method.

Stephan


Am 30.10.2014 10:06 schrieb "Suneel Marthi" <[hidden email]>:

> Trying to build the project via 'mvn clean package', the build fails always
> with the folllowing error:
>
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-compiler-plugin:3.1:compile
> (default-compile) on project flink-java: Compilation failure
> [ERROR]
>
> /Users/smarthi/opensourceprojects/incubator-flink/flink-java/src/main/java/org/apache/flink/api/java/operators/CoGroupOperator.java:[56,8]
> org.apache.flink.api.java.operators.CoGroupOperator is not abstract and
> does not override abstract method
>
> translateToDataFlow(org.apache.flink.api.common.operators.Operator<IN1>,org.apache.flink.api.common.operators.Operator<IN2>)
> in org.apache.flink.api.java.operators.TwoInputOperator
>
>
> Am I missing something here?
>

[Suneel Marthi]

I am using Java 7. This is from https://github.com/apache/incubator-flink,
was I looking in the wrong place ?


On Thu, Oct 30, 2014 at 5:40 AM, Stephan Ewen <[hidden email]> wrote:

> Hey Suneel!
>
> Which branch are you referring to?
>
> Also, which Java Version do you use? Java 6 (earlier versions) has some
> limitations to matching generic method signatures and cannot identify the
> correct overriding method.
>
> Stephan
>
>
> Am 30.10.2014 10:06 schrieb "Suneel Marthi" <[hidden email]>:
>
> > Trying to build the project via 'mvn clean package', the build fails
> always
> > with the folllowing error:
> >
> > [ERROR] Failed to execute goal
> > org.apache.maven.plugins:maven-compiler-plugin:3.1:compile
> > (default-compile) on project flink-java: Compilation failure
> > [ERROR]
> >
> >
> /Users/smarthi/opensourceprojects/incubator-flink/flink-java/src/main/java/org/apache/flink/api/java/operators/CoGroupOperator.java:[56,8]
> > org.apache.flink.api.java.operators.CoGroupOperator is not abstract and
> > does not override abstract method
> >
> >
> translateToDataFlow(org.apache.flink.api.common.operators.Operator<IN1>,org.apache.flink.api.common.operators.Operator<IN2>)
> > in org.apache.flink.api.java.operators.TwoInputOperator
> >
> >
> > Am I missing something here?
> >
>

[Suneel Marthi-2]

Scratch that. It does work with Java 7.  I think Java 7 should be made
mandatory??

On Thu, Oct 30, 2014 at 7:43 AM, Suneel Marthi <[hidden email]>
wrote:

> I am using Java 7. This is from https://github.com/apache/incubator-flink,
> was I looking in the wrong place ?
>
>
> On Thu, Oct 30, 2014 at 5:40 AM, Stephan Ewen <[hidden email]> wrote:
>
>> Hey Suneel!
>>
>> Which branch are you referring to?
>>
>> Also, which Java Version do you use? Java 6 (earlier versions) has some
>> limitations to matching generic method signatures and cannot identify the
>> correct overriding method.
>>
>> Stephan
>>
>>
>> Am 30.10.2014 10:06 schrieb "Suneel Marthi" <[hidden email]>:
>>
>> > Trying to build the project via 'mvn clean package', the build fails
>> always
>> > with the folllowing error:
>> >
>> > [ERROR] Failed to execute goal
>> > org.apache.maven.plugins:maven-compiler-plugin:3.1:compile
>> > (default-compile) on project flink-java: Compilation failure
>> > [ERROR]
>> >
>> >
>> /Users/smarthi/opensourceprojects/incubator-flink/flink-java/src/main/java/org/apache/flink/api/java/operators/CoGroupOperator.java:[56,8]
>> > org.apache.flink.api.java.operators.CoGroupOperator is not abstract and
>> > does not override abstract method
>> >
>> >
>> translateToDataFlow(org.apache.flink.api.common.operators.Operator<IN1>,org.apache.flink.api.common.operators.Operator<IN2>)
>> > in org.apache.flink.api.java.operators.TwoInputOperator
>> >
>> >
>> > Am I missing something here?
>> >
>>
>
>

[Stephan Ewen]

I think it also works with openJDK 6, just not with OracleJDK 6 . The
problem you encounter is a known bug in Oracle JDK 6, but will not be fixed
since they stopped supporting java 6.

To run it, java 6 is also fine, it is really only a limitation in the
oracle  java 6 compiler.


On Thu, Oct 30, 2014 at 12:47 PM, Suneel Marthi <[hidden email]> wrote:

> Scratch that. It does work with Java 7.  I think Java 7 should be made
> mandatory??
>
> On Thu, Oct 30, 2014 at 7:43 AM, Suneel Marthi <[hidden email]>
> wrote:
>
> > I am using Java 7. This is from
> https://github.com/apache/incubator-flink,
> > was I looking in the wrong place ?
> >
> >
> > On Thu, Oct 30, 2014 at 5:40 AM, Stephan Ewen <[hidden email]> wrote:
> >
> >> Hey Suneel!
> >>
> >> Which branch are you referring to?
> >>
> >> Also, which Java Version do you use? Java 6 (earlier versions) has some
> >> limitations to matching generic method signatures and cannot identify
> the
> >> correct overriding method.
> >>
> >> Stephan
> >>
> >>
> >> Am 30.10.2014 10:06 schrieb "Suneel Marthi" <[hidden email]>:
> >>
> >> > Trying to build the project via 'mvn clean package', the build fails
> >> always
> >> > with the folllowing error:
> >> >
> >> > [ERROR] Failed to execute goal
> >> > org.apache.maven.plugins:maven-compiler-plugin:3.1:compile
> >> > (default-compile) on project flink-java: Compilation failure
> >> > [ERROR]
> >> >
> >> >
> >>
> /Users/smarthi/opensourceprojects/incubator-flink/flink-java/src/main/java/org/apache/flink/api/java/operators/CoGroupOperator.java:[56,8]
> >> > org.apache.flink.api.java.operators.CoGroupOperator is not abstract
> and
> >> > does not override abstract method
> >> >
> >> >
> >>
> translateToDataFlow(org.apache.flink.api.common.operators.Operator<IN1>,org.apache.flink.api.common.operators.Operator<IN2>)
> >> > in org.apache.flink.api.java.operators.TwoInputOperator
> >> >
> >> >
> >> > Am I missing something here?
> >> >
> >>
> >
> >
>

[Stephan Ewen]

BTW: There is a discussion to bump the required version to java 7. Decision
pending...

On Thu, Oct 30, 2014 at 2:00 PM, Stephan Ewen <[hidden email]> wrote:

> I think it also works with openJDK 6, just not with OracleJDK 6 . The
> problem you encounter is a known bug in Oracle JDK 6, but will not be fixed
> since they stopped supporting java 6.
>
> To run it, java 6 is also fine, it is really only a limitation in the
> oracle  java 6 compiler.
>
>
> On Thu, Oct 30, 2014 at 12:47 PM, Suneel Marthi <[hidden email]>
> wrote:
>
>> Scratch that. It does work with Java 7.  I think Java 7 should be made
>> mandatory??
>>
>> On Thu, Oct 30, 2014 at 7:43 AM, Suneel Marthi <[hidden email]>
>> wrote:
>>
>> > I am using Java 7. This is from
>> https://github.com/apache/incubator-flink,
>> > was I looking in the wrong place ?
>> >
>> >
>> > On Thu, Oct 30, 2014 at 5:40 AM, Stephan Ewen <[hidden email]> wrote:
>> >
>> >> Hey Suneel!
>> >>
>> >> Which branch are you referring to?
>> >>
>> >> Also, which Java Version do you use? Java 6 (earlier versions) has some
>> >> limitations to matching generic method signatures and cannot identify
>> the
>> >> correct overriding method.
>> >>
>> >> Stephan
>> >>
>> >>
>> >> Am 30.10.2014 10:06 schrieb "Suneel Marthi" <[hidden email]>:
>> >>
>> >> > Trying to build the project via 'mvn clean package', the build fails
>> >> always
>> >> > with the folllowing error:
>> >> >
>> >> > [ERROR] Failed to execute goal
>> >> > org.apache.maven.plugins:maven-compiler-plugin:3.1:compile
>> >> > (default-compile) on project flink-java: Compilation failure
>> >> > [ERROR]
>> >> >
>> >> >
>> >>
>> /Users/smarthi/opensourceprojects/incubator-flink/flink-java/src/main/java/org/apache/flink/api/java/operators/CoGroupOperator.java:[56,8]
>> >> > org.apache.flink.api.java.operators.CoGroupOperator is not abstract
>> and
>> >> > does not override abstract method
>> >> >
>> >> >
>> >>
>> translateToDataFlow(org.apache.flink.api.common.operators.Operator<IN1>,org.apache.flink.api.common.operators.Operator<IN2>)
>> >> > in org.apache.flink.api.java.operators.TwoInputOperator
>> >> >
>> >> >
>> >> > Am I missing something here?
>> >> >
>> >>
>> >
>> >
>>
>
>

[Suneel Marthi]

It shuld happen as Java 6 is nearing EOL

Sent from my iPhone

> On Oct 30, 2014, at 9:00 AM, Stephan Ewen <[hidden email]> wrote:
>
> BTW: There is a discussion to bump the required version to java 7. Decision
> pending...
>
>> On Thu, Oct 30, 2014 at 2:00 PM, Stephan Ewen <[hidden email]> wrote:
>>
>> I think it also works with openJDK 6, just not with OracleJDK 6 . The
>> problem you encounter is a known bug in Oracle JDK 6, but will not be fixed
>> since they stopped supporting java 6.
>>
>> To run it, java 6 is also fine, it is really only a limitation in the
>> oracle  java 6 compiler.
>>
>>
>> On Thu, Oct 30, 2014 at 12:47 PM, Suneel Marthi <[hidden email]>
>> wrote:
>>
>>> Scratch that. It does work with Java 7.  I think Java 7 should be made
>>> mandatory??
>>>
>>> On Thu, Oct 30, 2014 at 7:43 AM, Suneel Marthi <[hidden email]>
>>> wrote:
>>>
>>>> I am using Java 7. This is from
>>> https://github.com/apache/incubator-flink,
>>>> was I looking in the wrong place ?
>>>>
>>>>
>>>>> On Thu, Oct 30, 2014 at 5:40 AM, Stephan Ewen <[hidden email]> wrote:
>>>>>
>>>>> Hey Suneel!
>>>>>
>>>>> Which branch are you referring to?
>>>>>
>>>>> Also, which Java Version do you use? Java 6 (earlier versions) has some
>>>>> limitations to matching generic method signatures and cannot identify
>>> the
>>>>> correct overriding method.
>>>>>
>>>>> Stephan
>>>>>
>>>>>
>>>>> Am 30.10.2014 10:06 schrieb "Suneel Marthi" <[hidden email]>:
>>>>>
>>>>>> Trying to build the project via 'mvn clean package', the build fails
>>>>> always
>>>>>> with the folllowing error:
>>>>>>
>>>>>> [ERROR] Failed to execute goal
>>>>>> org.apache.maven.plugins:maven-compiler-plugin:3.1:compile
>>>>>> (default-compile) on project flink-java: Compilation failure
>>>>>> [ERROR]
>>> /Users/smarthi/opensourceprojects/incubator-flink/flink-java/src/main/java/org/apache/flink/api/java/operators/CoGroupOperator.java:[56,8]
>>>>>> org.apache.flink.api.java.operators.CoGroupOperator is not abstract
>>> and
>>>>>> does not override abstract method
>>> translateToDataFlow(org.apache.flink.api.common.operators.Operator<IN1>,org.apache.flink.api.common.operators.Operator<IN2>)
>>>>>> in org.apache.flink.api.java.operators.TwoInputOperator
>>>>>>
>>>>>>
>>>>>> Am I missing something here?
>>
>>