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https://issues.apache.org/jira/browse/FLINK-20870?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17260939#comment-17260939
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xx chai commented on FLINK-20870:
---------------------------------
this is my program
> FlinkKafkaSink
> --------------
>
> Key: FLINK-20870
> URL: https://issues.apache.org/jira/browse/FLINK-20870
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Kafka
> Affects Versions: 1.12.0
> Environment: flink :1.12.0
> kafka 2.2.1
> Reporter: xx chai
> Priority: Major
> Attachments: 1610072517(1).jpg
>
>
> I consum from kafka sink to kafka,Then I split the message into then pieces.I
> guess the ten message should in one transaction. When the fifth message is
> sink kafka ,I throw a exception.but the first four are already in kafka.
> I set some parameters :
> properties.setProperty("transactional.id", "cxx");
> properties.setProperty("ack", "all");
> properties.put("enable.idempotence",true);
> properties.put("max.in.flight.requests.per.connection",5);
> properties.put("retries", 2);
> properties.setProperty("client.id", "producer-syn-2");
> properties.put("isolation.level","read_committed");
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