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https://issues.apache.org/jira/browse/CAMEL-9242?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Claus Ibsen resolved CAMEL-9242.
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Resolution: Fixed
> Upgrade slf4j-api to 1.7
> ------------------------
>
> Key: CAMEL-9242
> URL: https://issues.apache.org/jira/browse/CAMEL-9242
> Project: Camel
> Issue Type: Task
> Components: camel-core
> Reporter: Claus Ibsen
> Assignee: Claus Ibsen
> Fix For: 2.17.0
>
>
> We have been on 1.6 for a long time, and many others are on 1.7 which can
> cause problems such as from karaf / pax-logging
> {code}
> Caused by: java.lang.NoSuchMethodError:
> org.apache.log4j.Logger.<init>(Ljava/lang/String;)V
> at org.apache.log4j.spi.RootLogger.<init>(RootLogger.java:45)
> at org.apache.log4j.LogManager.<clinit>(LogManager.java:82)
> at
> org.ops4j.pax.logging.service.internal.PaxLoggingServiceImpl.configureDefaults(PaxLoggingServiceImpl.java:299)
> at
> org.ops4j.pax.logging.service.internal.PaxLoggingServiceImpl.<init>(PaxLoggingServiceImpl.java:70)
> at
> org.ops4j.pax.logging.service.internal.Activator.start(Activator.java:117)
> at org.apache.felix.connect.PojoSRBundle.start(PojoSRBundle.java:153)
> ... 20 more
> {code}
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