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[jira] [Created] (FLINK-10961) RuntimeException: Could not extract key when using closure


Avi Levi created FLINK-10961:
--------------------------------

             Summary: RuntimeException: Could not extract key when using closure 
                 Key: FLINK-10961
                 URL: https://issues.apache.org/jira/browse/FLINK-10961
             Project: Flink
          Issue Type: Bug
          Components: Kafka Connector
    Affects Versions: 1.6.2
            Reporter: Avi Levi


I am getting this exception when I tried to extract the key using external value e.g 

{code:java}
val partitionFactor = 10
val domainsSrc = env
.addSource(kafkaConsumer)
.keyBy(_.id.hashCode % partitionFactor
.map(...) 

{code}
I am getting this exception 

{code:java}
java.lang.RuntimeException: Could not extract key from Foo("some-uuid","text",1540348398,1)
....
Caused by: java.lang.ArithmeticException: / by zero

{code}
however when I simply use it like 

{code:java}
val domainsSrc = env
.addSource(kafkaConsumer)
.keyBy(_.id.hashCode % 10
.map(...) 

{code}
it works fine 



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