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https://issues.apache.org/jira/browse/FLINK-20552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17247034#comment-17247034
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Jark Wu commented on FLINK-20552:
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+1 to [~Leonard Xu]'s proposal.
We should also add a proper testing for this. An easier way to test this is
using {{OneInputStreamOperatorTestHarness}}.
You can have a look at the
{{GroupAggregateHarnessTest#testAggregateWithRetraction}} about how to create
an operator harness by using SQL. And have a look at
{{RowTimeDeduplicateFunctionTest#testRowTimeDeduplicateKeepLastRow(boolean,
boolean, java.util.List<java.lang.Object>)}} about how to snapshot and restore.
> JdbcDynamicTableSink doesn't sink buffered data on 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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