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https://issues.apache.org/jira/browse/FLINK-34723?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xingcan Cui closed FLINK-34723.
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Resolution: Duplicate
Duplicate with FLINK-35641
> Parquet writer should restrict map keys to be not null
> ------------------------------------------------------
>
> Key: FLINK-34723
> URL: https://issues.apache.org/jira/browse/FLINK-34723
> Project: Flink
> Issue Type: Bug
> Components: Formats (JSON, Avro, Parquet, ORC, SequenceFile)
> Affects Versions: 1.19.0, 1.18.1
> Reporter: Xingcan Cui
> Priority: Major
> Labels: pull-request-available
>
> We got the following exception when reading a parquet file (with map types)
> generated by Flink.
> {code:java}
> Map keys must be annotated as required.{code}
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