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From Dominique Rondé <dominique.ro...@codecentric.de>
Subject Re: Join two Datasets --> InvalidProgramException
Date Tue, 09 Feb 2016 19:13:59 GMT
Hi all,

i finally figured out that there is a getter for a boolean field which 
may be the source of the trouble. It seems that getBooleanField (as we 
use it) is not the best choice. Now the plan is executed with another 
error code. :(

Caused by: java.lang.Exception: Unsupported driver strategy for join 
driver: CO_GROUP_RAW

Is there any link to a documentation or some example code which you may 
recommend beside the offical documentation?

But folks, thanks for your greate support! A really nice community here!

Greets
Dominique

Am 09.02.2016 um 19:41 schrieb Till Rohrmann:
>
> I tested the |TypeExtractor| with your |SourceA| and |SourceB| types 
> (adding proper setters and getters) and it correctly returned a 
> |PojoType|. Thus, I would suspect that you haven’t specified the 
> proper setters and getters in your implementation.
>
> Cheers,
> Till
>
> ​
>
> On Tue, Feb 9, 2016 at 2:46 PM, Dominique Rondé 
> <dominique.ronde@codecentric.de 
> <mailto:dominique.ronde@codecentric.de>> wrote:
>
>     Here we go!
>
>       ExecutionEnvironment env =
>     ExecutionEnvironment.createRemoteEnvironment("xxx.xxx.xxx.xxx",
>     53408,"flink-job.jar");
>
>
>       DataSource<String> datasourceA=
>     env.readTextFile("hdfs://dev//sourceA/");
>       DataSource<String> datasourceB=
>     env.readTextFile("hdfs://dev//sourceB/");
>
>       DataSet<SourceA> sourceA= datasourceA.map(new SourceAMapper());
>       DataSet<SourceB> sourceB= datasourceB.map(new SourceBMapper());
>
>     sourceA.join(sourceB).where("sessionId").equalTo("sessionId").print();
>
>     Thanks a lot!
>     Dominique
>
>
>     Am 09.02.2016 um 14:36 schrieb Till Rohrmann:
>>
>>     Could you post the complete example code (Flink job including the
>>     type definitions). For example, if the data sets are of type
>>     |DataSet<Parent>|, then it will be treated as a |GenericType|.
>>     Judging from your pseudo code, it looks fine on the first glance.
>>
>>     Cheers,
>>     Till
>>
>>     ​
>>
>>     On Tue, Feb 9, 2016 at 2:25 PM, Dominique Rondé
>>     <dominique.ronde@codecentric.de
>>     <mailto:dominique.ronde@codecentric.de>> wrote:
>>
>>         Sorry, i was out for lunch. Maybe the problem is that
>>         sessionID is a String?
>>
>>         public abstract class Parent{
>>           private Date eventDate;
>>           private EventType eventType;
>>           private String sessionId;
>>
>>         public Parent() { }
>>         //GETTER & SETTER
>>         }
>>
>>         public class SourceA extends Parent{
>>           private Boolean outboundMessage;
>>           private String soapMessage;
>>
>>         public SourceA () {
>>             super();
>>          }
>>         //GETTER & SETTER
>>         }
>>
>>         public class SourceB extends Parent{
>>           private Integer id;
>>           private String username;
>>
>>         public SourceB () {
>>             super();
>>          }
>>         //GETTER & SETTER
>>
>>         }
>>
>>         Am 09.02.2016 um 12:06 schrieb Till Rohrmann:
>>>
>>>         Could you share the code for your types |SourceA| and
>>>         |SourceB|. It seems as if Flink does not recognize them to
>>>         be POJOs because he assigned them the |GenericType| type.
>>>         Either there is something wrong with the type extractor or
>>>         your implementation does not fulfil the requirements for
>>>         POJOs, as indicated by Chiwan.
>>>
>>>         Cheers,
>>>         Till
>>>
>>>         ​
>>>
>>>         On Tue, Feb 9, 2016 at 11:53 AM, Dominique Rondé
>>>         <dominique.ronde@codecentric.de
>>>         <mailto:dominique.ronde@codecentric.de>> wrote:
>>>
>>>             The fields in SourceA and SourceB are private but have
>>>             public getters and setters. The classes provide an empty
>>>             and public constructor.
>>>
>>>             Am 09.02.2016 11:47 schrieb "Chiwan Park"
>>>             <chiwanpark@apache.org <mailto:chiwanpark@apache.org>>:
>>>
>>>                 Oh, the fields in SourceA have public getters. Does
>>>                 the fields in SourceA have public setter? SourceA
>>>                 needs public setter for private fields.
>>>
>>>                 Regards,
>>>                 Chiwan Park
>>>
>>>                 > On Feb 9, 2016, at 7:45 PM, Chiwan Park
>>>                 <chiwanpark@apache.org
>>>                 <mailto:chiwanpark@apache.org>> wrote:
>>>                 >
>>>                 > Hi Dominique,
>>>                 >
>>>                 > It seems that `SourceA` is not dealt as POJO. Are
>>>                 all fields in SourceA public? There are some
>>>                 requirements for POJO classes [1].
>>>                 >
>>>                 > [1]:
>>>                 https://ci.apache.org/projects/flink/flink-docs-release-0.10/apis/programming_guide.html#pojos
>>>                 >
>>>                 > Regards,
>>>                 > Chiwan Park
>>>                 >
>>>                 >> On Feb 9, 2016, at 7:42 PM, Dominique Rondé
>>>                 <dominique.ronde@codecentric.de
>>>                 <mailto:dominique.ronde@codecentric.de>> wrote:
>>>                 >>
>>>                 >> Hi  folks,
>>>                 >>
>>>                 >> i try to join two datasets containing some PoJos.
>>>                 Each PoJo inherit a field "sessionId" from the
>>>                 parent class. The field is private but has a public
>>>                 getter.
>>>                 >>
>>>                 >> The join is like this:
>>>                 >> DataSet<Tuple2<SourceA,SourceB>> joinedDataSet
=
>>>                 sourceA.join(SourceB).where("sessionId").equalTo("sessionId");
>>>                 >>
>>>                 >> But the result is the following execption:
>>>                 >>
>>>                 >> Exception in thread "main"
>>>                 org.apache.flink.api.common.InvalidProgramException:
>>>                 This type
>>>                 (GenericType<x.y.z.service.eventstore.dto.SourceA>)
>>>                 cannot be used as key.
>>>                 >>    at
>>>                 org.apache.flink.api.java.operators.Keys$ExpressionKeys.<init>(Keys.java:287)
>>>                 >>    at
>>>                 org.apache.flink.api.java.operators.JoinOperator$JoinOperatorSets.where(JoinOperator.java:890)
>>>                 >>    at
>>>                 x.y.z.eventstore.processing.pmc.PmcProcessor.main(PmcProcessor.java:55)
>>>                 >>
>>>                 >> I spend some time with google around but I don't
>>>                 get an idea what is wrong. I hope some of you can
>>>                 give me a hint...
>>>                 >>
>>>                 >> Greets
>>>                 >> Dominique
>>>                 >>
>>>                 >
>>>
>>>
>>
>>         -- 
>>         Dominique Rondé | Senior Consultant
>>
>>         codecentric AG | Kreuznacherstrasse 30 | 60486 Frankfurt | Deutschland
>>         mobil:+49 (0) 172.7182592 <tel:%2B49%20%280%29%20172.7182592>
>>         www.codecentric.de <http://www.codecentric.de>  |blog.codecentric.de
<http://blog.codecentric.de>  |www.meettheexperts.de <http://www.meettheexperts.de>
 |www.more4fi.de <http://www.more4fi.de>     
>>
>>         Sitz der Gesellschaft: Solingen | HRB 25917| Amtsgericht Wuppertal
>>         Vorstand: Michael Hochgürtel . Mirko Novakovic . Rainer Vehns
>>         Aufsichtsrat: Patric Fedlmeier (Vorsitzender) . Klaus Jäger . Jürgen Schütz
>>
>>
>
>     -- 
>     Dominique Rondé | Senior Consultant
>
>     codecentric AG | Kreuznacherstrasse 30 | 60486 Frankfurt | Deutschland
>     mobil:+49 (0) 172.7182592 <tel:%2B49%20%280%29%20172.7182592>
>     www.codecentric.de <http://www.codecentric.de>  |blog.codecentric.de <http://blog.codecentric.de>
 |www.meettheexperts.de <http://www.meettheexperts.de>  |www.more4fi.de <http://www.more4fi.de>
    
>
>     Sitz der Gesellschaft: Solingen | HRB 25917| Amtsgericht Wuppertal
>     Vorstand: Michael Hochgürtel . Mirko Novakovic . Rainer Vehns
>     Aufsichtsrat: Patric Fedlmeier (Vorsitzender) . Klaus Jäger . Jürgen Schütz
>
>

-- 
Dominique Rondé | Senior Consultant

codecentric AG | Kreuznacherstrasse 30 | 60486 Frankfurt | Deutschland
mobil: +49 (0) 172.7182592
www.codecentric.de | blog.codecentric.de | www.meettheexperts.de | www.more4fi.de

Sitz der Gesellschaft: Solingen | HRB 25917| Amtsgericht Wuppertal
Vorstand: Michael Hochgürtel . Mirko Novakovic . Rainer Vehns
Aufsichtsrat: Patric Fedlmeier (Vorsitzender) . Klaus Jäger . Jürgen Schütz


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