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Flink Jira Bot updated FLINK-24510: ----------------------------------- Labels: pull-request-available stale-major (was: pull-request-available) 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. > Fix the duplicate log output of libraries/connectors,when logback is used > ------------------------------------------------------------------------- > > Key: FLINK-24510 > URL: https://issues.apache.org/jira/browse/FLINK-24510 > Project: Flink > Issue Type: Bug > Components: Deployment / Scripts > Affects Versions: 1.14.0 > Reporter: xiangqiao > Priority: Major > Labels: pull-request-available, stale-major > Attachments: image-2021-10-12-10-52-22-389.png > > > When logback is used, the logs of libraries / connectors are output > repeatedly. > !image-2021-10-12-10-52-22-389.png! > > By default, *appenders are cumulative*: a logger will log to the appenders > attached to itself (if any) as well as all the appenders attached to its > ancestors. Thus, attaching the same appender to multiple loggers will cause > logging output to be duplicated. > [http://logback.qos.ch/manual/configuration.html#cumulative] > > We can solve this problem in the following ways: > {code:java} > <!-- The following lines keep the log level of common libraries/connectors on > log level INFO. The root logger does not override this. You have to > manually > change the log levels here. --> > <logger name="akka" level="INFO"/> > <logger name="org.apache.kafka" level="INFO"/> > <logger name="org.apache.hadoop" level="INFO"/> > <logger name="org.apache.zookeeper" level="INFO"/> > <!-- Suppress the irrelevant (wrong) warnings from the Netty channel handler > --> > <logger name="org.jboss.netty.channel.DefaultChannelPipeline" level="ERROR"/> > {code} > > -- This message was sent by Atlassian Jira (v8.20.1#820001)