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https://issues.apache.org/jira/browse/FLINK-9052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17336641#comment-17336641
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Flink Jira Bot commented on FLINK-9052:
---------------------------------------
This issue was labeled "stale-major" 7 ago and has not received any updates so
it is being deprioritized. If this ticket is actually Major, please raise the
priority and ask a committer to assign you the issue or revive the public
discussion.
> Flink complains when scala.Option is used inside POJO
> -----------------------------------------------------
>
> Key: FLINK-9052
> URL: https://issues.apache.org/jira/browse/FLINK-9052
> Project: Flink
> Issue Type: Bug
> Components: API / Type Serialization System
> Affects Versions: 1.4.2
> Reporter: Truong Duc Kien
> Priority: Major
> Labels: stale-major
> Attachments: TypeInfomationTest.scala
>
>
> According to the documentation, Flink has a specialized serializer for Option
> type. However, when an Option field is used inside a POJO, the following
> WARNING appears in TaskManagers' log.
>
> {{No fields detected for class scala.Option. Cannot be used as a PojoType.
> Will be handled as GenericType}}
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