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https://issues.apache.org/jira/browse/FLINK-24626?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-24626:
-----------------------------------
Labels: correctness stale-major (was: correctness)
I am the [Flink Jira Bot|https://github.com/apache/flink-jira-bot/] and I help
the community manage its development. I see this issues has been marked as
Major but is unassigned and neither itself nor its Sub-Tasks have been updated
for 60 days. I have gone ahead and added a "stale-major" to the issue". If this
ticket is a Major, please either assign yourself or give an update. Afterwards,
please remove the label or in 7 days the issue will be deprioritized.
> Flink JDBC Sink may lose data in left join
> ------------------------------------------
>
> Key: FLINK-24626
> URL: https://issues.apache.org/jira/browse/FLINK-24626
> Project: Flink
> Issue Type: Bug
> Components: Connectors / JDBC
> Reporter: Kenyore
> Priority: Major
> Labels: correctness, stale-major
>
> The JDBC sink will lose some data while using
> TableBufferReducedStatementExecutor and left join.
> Here are a snippet of executeBatch.
> {code:java}
> @Override
> public void executeBatch() throws SQLException {
> for (Map.Entry<RowData, Tuple2<Boolean, RowData>> entry :
> reduceBuffer.entrySet()) {
> if (entry.getValue().f0) {
> upsertExecutor.addToBatch(entry.getValue().f1);
> } else {
> // delete by key
> deleteExecutor.addToBatch(entry.getKey());
> }
> }
> upsertExecutor.executeBatch();
> deleteExecutor.executeBatch();
> reduceBuffer.clear();
> }
> {code}
> Left join will generate a DETETE row before upsert row and the executeBatch
> will excute them in a wrong order.Whitch may causes data lose.
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