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https://issues.apache.org/jira/browse/FLINK-12309?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexander Fedulov closed FLINK-12309.
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Resolution: Not A Problem
The original reporter confirmed that the issue is no longer relevant:
https://github.com/apache/flink/pull/8248#issuecomment-993543186
> JDBCOoutputFormat and JDBCAppendTableSink float behavior is not align
> ---------------------------------------------------------------------
>
> Key: FLINK-12309
> URL: https://issues.apache.org/jira/browse/FLINK-12309
> Project: Flink
> Issue Type: Bug
> Components: Connectors / JDBC
> Reporter: FaxianZhao
> Priority: Not a Priority
> Labels: auto-deprioritized-major, auto-deprioritized-minor,
> pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When we use JDBCAppendTableSinkBuilder#setParameterTypes() config the JDBC
> types, it bind BasicTypeInfo#FLOAT_TYPE_INFO to java.sql.Types#FLOAT.
> But JDBCOutputFormat#writeRecord will force cast the float value to double,
> so it will throw ClassCastException like "java.lang.Float cannot be cast to
> java.lang.Double".
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