[jira] [Created] (FLINK-22504) add serialVersionUID for all Serializable class

[Shang Yuanchun (Jira)]

lincoln lee created FLINK-22504:
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             Summary: add serialVersionUID for all Serializable class
                 Key: FLINK-22504
                 URL: https://issues.apache.org/jira/browse/FLINK-22504
             Project: Flink
          Issue Type: Improvement
            Reporter: lincoln lee


*"Serializable classes must define a Serial Version UID" is one of our quality guide, but  there still exists non-compliance ones. We should  fix this to avoid unexpected compatibility problems.*



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