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https://issues.apache.org/jira/browse/FLINK-28697?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17571907#comment-17571907
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Josh Mahonin commented on FLINK-28697:
--------------------------------------
Hi [~yunta]
Unfortunately the issue is a few months old, and as such the logs have expired
from our aggregator.
We were using the same Flink version, but there was a mismatch in JVM versions
between the compiled JAR, and what was being used at runtime. As well, I
believe the JVM versions were different between client and server. I'm not
certain exactly scenario caused the issue, but specifically setting the
{{serialVersionUID}} resolved it. Note that it's the only class in that package
without one defined.
> MapDataSerializer doesn't declare a serialVersionUID
> ----------------------------------------------------
>
> Key: FLINK-28697
> URL: https://issues.apache.org/jira/browse/FLINK-28697
> Project: Flink
> Issue Type: Bug
> Components: API / Type Serialization System
> Affects Versions: 1.15.1
> Reporter: Josh Mahonin
> Priority: Major
> Labels: pull-request-available
>
> MapDataSerializer doesn't declare a serialVersionUID, which can manifest as a
> InvalidClassException when attempting to serialize with different JREs for
> compilation / runtime.
> {code:java}
> Caused by: java.io.InvalidClassException:
> org.apache.flink.table.runtime.typeutils.MapDataSerializer; local class
> incompatible: stream classdesc serialVersionUID = 2533002123505507000, local
> class serialVersionUID = 1622156938509929811 {code}
>
>
>
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