Roman Khachatryan created FLINK-23876:
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Summary: Remove limitation about JDBC exactly once sink about
multiple connections per transaction
Key: FLINK-23876
URL: https://issues.apache.org/jira/browse/FLINK-23876
Project: Flink
Issue Type: Improvement
Components: Connectors / JDBC, Documentation
Affects Versions: 1.14.0
Reporter: Roman Khachatryan
Fix For: 1.14.0
[https://ci.apache.org/projects/flink/flink-docs-release-1.13/docs/connectors/datastream/jdbc/#jdbcsinkexactlyoncesink]
says:{quote}Attention: In 1.13, Flink JDBC sink does not support exactly-once
mode with MySQL or other databases that do not support multiple XA transaction
per connection. We will improve the support in FLINK-22239.{quote}
In FLINK- connection pooling was added so this limitation doesn't apply anymore.
So this should be removed or replaced with a list of databases.
Connection pooling should be enabled explicitly: should list DBs requiring this
(mysql, postgres) and give an example code.
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