Echo Lee created FLINK-30371: -------------------------------- Summary: JdbcOutputFormat is at risk of database connection leaks Key: FLINK-30371 URL: https://issues.apache.org/jira/browse/FLINK-30371 Project: Flink Issue Type: Bug Components: Connectors / JDBC Affects Versions: 1.16.0, 1.16.1, jdbc-3.0.0 Reporter: Echo Lee Fix For: jdbc-3.0.0
When writing to the target table fails for some reason, for example, the target table does not exist. The internal call sequence of JdbcOutputFormat is: JdbcOutputFormat#flush(throws IOException) --> JdbcOutputFormat#close --> JdbcOutputFormat#flush(throws RuntimeException). Will not call the close method of the database connection, this will cause the number of database connections to continue to rise and reach the limit. -- This message was sent by Atlassian Jira (v8.20.10#820010)