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https://issues.apache.org/jira/browse/FLINK-19509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17211598#comment-17211598
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Jark Wu commented on FLINK-19509:
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Implemented in master: d4f2abb278047180cd174febc45acb432f5b0735
> ClassCastException for MULTISET type of JsonRowDataDeserializationSchema and
> JsonRowDataSerializationSchema
> -----------------------------------------------------------------------------------------------------------
>
> Key: FLINK-19509
> URL: https://issues.apache.org/jira/browse/FLINK-19509
> Project: Flink
> Issue Type: Bug
> Components: Formats (JSON, Avro, Parquet, ORC, SequenceFile)
> Affects Versions: 1.11.0
> Reporter: hailong wang
> Assignee: hailong wang
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.12.0
>
>
> For JsonToRowDataConverters#createNotNullConverter and
> RowDataToJsonConverters#
> createNotNullConverter, We force the multiset type to be a Map type. This
> will cause exception:
> {code:java}
> java.lang.ClassCastException:
> org.apache.flink.table.types.logical.MultisetType cannot be cast to
> org.apache.flink.table.types.logical.MapType{code}
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