[jira] [Created] (FLINK-19321) CollectSinkFunction does not define serialVersionUID

[Shang Yuanchun (Jira)]

Fabian Hueske created FLINK-19321:
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             Summary: CollectSinkFunction does not define serialVersionUID
                 Key: FLINK-19321
                 URL: https://issues.apache.org/jira/browse/FLINK-19321
             Project: Flink
          Issue Type: Bug
          Components: Table SQL / Runtime
    Affects Versions: 1.11.2, 1.12.0
            Reporter: Fabian Hueske


The {{org.apache.flink.streaming.api.operators.collect.CollectSinkFunction}} function does not define a {{serialVersionUID}}.

Function objects are serialized using Java Serialization and should define a {{serialVersionUID.}}
 

If no o serialVersionUID is defined, Java automatically generates IDs to check compatibility of objects during deserialization. However, the generation depends on the environment (JVM, class version, etc.) and can hence lead to {{[java.io|http://java.io/].InvalidClassException}} even if the classes are compatible.



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