mei jie created FLINK-20552:
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Summary: 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
Reporter: mei jie
JdbcBatchingOutputFormat is wrapped to OutputFormatSinkFunction``` when
createSinkTransformation at CommonPhysicalSink class. but CommonPhysicalSink
don't implement CheckpointedFunction interface, so the flush method of
JdbcBatchingOutputFormat can't be called when checkpoint
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