Jave-Chen opened a new issue #1688: [BUG] Fix bug : Use try-with-resources or close this "ResultSet" in a "finally" clause URL: https://github.com/apache/incubator-dolphinscheduler/issues/1688 *For better global communication, please give priority to using English description, thx! * **Describe the bug** A clear and concise description of what the bug is. Connections, streams, files, and other classes that implement the Closeable interface or its super-interface, AutoCloseable, needs to be closed after use. Further, that close call must be made in a finally block otherwise an exception could keep the call from being made. Preferably, when class implements AutoCloseable, resource should be created using "try-with-resources" pattern and will be closed automatically. Failure to properly close resources will result in a resource leak which could bring first the application and then perhaps the box it's on to their knees. **Source FIle** dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/utils/PostgrePerformance.java dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/utils/MysqlPerformance.java **SonarCloud Link** https://sonarcloud.io/project/issues?id=apache-dolphinscheduler&issues=AW9PvjdUYzPBRjkobYmb&open=AW9PvjdUYzPBRjkobYmb https://sonarcloud.io/project/issues?id=apache-dolphinscheduler&issues=AW9PvjdUYzPBRjkobYma&open=AW9PvjdUYzPBRjkobYma https://sonarcloud.io/project/issues?id=apache-dolphinscheduler&issues=AW9PvjdUYzPBRjkobYmc&open=AW9PvjdUYzPBRjkobYmc https://sonarcloud.io/project/issues?id=apache-dolphinscheduler&issues=AW9Pvjd_YzPBRjkobYmy&open=AW9Pvjd_YzPBRjkobYmy https://sonarcloud.io/project/issues?id=apache-dolphinscheduler&issues=AW9Pvjd_YzPBRjkobYmx&open=AW9Pvjd_YzPBRjkobYmx
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