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https://issues.apache.org/jira/browse/FLINK-16469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17067901#comment-17067901
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Till Rohrmann commented on FLINK-16469:
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Sorry for the late reply [~gslowikowski]. I've assigned you to this ticket.
Please go ahead and open a PR for fixing the above-described problems.
> Improve logging configurations
> ------------------------------
>
> Key: FLINK-16469
> URL: https://issues.apache.org/jira/browse/FLINK-16469
> Project: Flink
> Issue Type: Improvement
> Components: Command Line Client
> Affects Versions: 1.11.0
> Reporter: Grzegorz Slowikowski
> Assignee: Grzegorz Slowikowski
> Priority: Minor
>
> I'd like to propose several improvements to Log4J and Logback configuration
> files:
>
> 1 (bug).
> In *logback.xml* and *logback-console.xml* files some loggers define the same
> appender as root configuration. This leads to logs printed twice. Example:
> current configuration:
> {code:java}
> <logger name="akka" level="INFO">
> <appender-ref ref="file"/>
> </logger>
> {code}
> proper configuration:
> {code:java}
> <logger name="akka" level="INFO"/>{code}
>
> 2 (bug).
> During Log4J to Log4J2 migration (commit
> [https://github.com/apache/flink/commit/e7db6b240572d08b549ea4ddb7b7b9ba719f7221])
> log level for
> *org.apache.flink.shaded.akka.org.jboss.netty.channel.DefaultChannelPipeline*
> logger was changed from *ERROR* to *OFF*.
> Probably this change was accidental. If so, it should be reverted.
>
> 3 (improvement).
> Currently "flink" script uses "log4j-cli.properties" and "logback.xml"
> configuration files. There is no "*logback-cli.xml*" file.
> "log4j-cli.properties" logs to file AND console ("log4j.properties" and
> "logback.xml" only to files. It would be good to have similar "-cli"
> configuration file for projects using Logback logging implementation. I would
> provide "logback-cli.xml" file and use it in "flink" script instead of
> "logback.xml".
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