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https://issues.apache.org/jira/browse/FLINK-20552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17246999#comment-17246999
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zhuxiaoshang commented on FLINK-20552:
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Maybe OutputFormatSinkFunction should implements CheckpointedFunction
> Jdbc connector don't sink buffer data when checkpoint
> -----------------------------------------------------
>
> Key: FLINK-20552
> URL: https://issues.apache.org/jira/browse/FLINK-20552
> Project: Flink
> Issue Type: Bug
> Components: Connectors / JDBC, Table SQL / Ecosystem
> Reporter: mei jie
> Priority: Major
> Labels: starter
>
> JdbcBatchingOutputFormat is wrapped to OutputFormatSinkFunction``` when
> createSinkTransformation at CommonPhysicalSink class. but
> OutputFormatSinkFunction don't implement CheckpointedFunction interface, so
> the flush method of JdbcBatchingOutputFormat can't be called when checkpoint
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