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https://issues.apache.org/jira/browse/STORM-1900?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15331515#comment-15331515
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Roland Jungnickel edited comment on STORM-1900 at 6/15/16 10:36 AM:
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>From doing a bit of research I've found that other frameworks are having the
>same issues because like storm they use an actual implementation of slf4j (in
>storms case log4j2). So I think storm is forcing its end users to use log4j2
>or is there a way to use logback with storm?
was (Author: soag):
>From doing a bit of research I've found that other frameworks are having the
>same issues because like storm they use an actual implementation of slf4j (in
>storms case log4j2). So I think storm is forcing it's end users to use log4j2
>or is there a way to use logback with storm?
> Log configuration with logback
> ------------------------------
>
> Key: STORM-1900
> URL: https://issues.apache.org/jira/browse/STORM-1900
> Project: Apache Storm
> Issue Type: Question
> Components: storm-core
> Affects Versions: 0.10.1
> Reporter: Roland Jungnickel
> Priority: Minor
> Labels: build
>
> I am trying to use logback in my project and am getting this message:
> {quote}
> 2016-06-14 16:55:56.945 STDERR [INFO] SLF4J: Class path contains multiple
> SLF4J bindings.
> 2016-06-14 16:55:56.997 STDERR [INFO] SLF4J: Found binding in
> [jar:file:/opt/apache-storm-0.10.1/lib/log4j-slf4j-impl-2.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> 2016-06-14 16:55:56.998 STDERR [INFO] SLF4J: Found binding in
> [jar:file:/srv/storm/supervisor/stormdist/MatchIdentifiers-675106f-1465923070-5-1465923118/stormjar.jar!/org/slf4j/impl/StaticLoggerBinder.class]
> 2016-06-14 16:55:56.998 STDERR [INFO] SLF4J: See
> http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
> 2016-06-14 16:55:56.998 STDERR [INFO] SLF4J: Actual binding is of type
> [org.apache.logging.slf4j.Log4jLoggerFactory]
> 2016-06-14 16:56:03.647 STDERR [INFO] 2016-06-14 16:56:03,641 ERROR Logger
> contains an invalid element or attribute "appender"{quote}
> The solution slf4j suggests is to exclude slf4j from the dependency which in
> this case would be storm. But since storm includes slf4j in the classpath
> when starting the topology this does not work.
> Is there a known way to fix this?
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