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ASF GitHub Bot commented on CAMEL-11352: ---------------------------------------- Github user asfgit closed the pull request at: https://github.com/apache/camel/pull/1727 > duplicated/missing logs when camel-paxlogging work with pax-logging-log4j2 > -------------------------------------------------------------------------- > > Key: CAMEL-11352 > URL: https://issues.apache.org/jira/browse/CAMEL-11352 > Project: Camel > Issue Type: Bug > Affects Versions: 2.17.6, 2.19.0 > Reporter: Xilai Dai > Assignee: Claus Ibsen > Fix For: 2.19.1, 2.20.0 > > > This problem is found after switch to the karaf 4.1.x, which using > pax-logging-log4j2 insteadof pax-logging-service. > I created a small test case project for reproduce this issue. > https://github.com/xldai/test/tree/master/test-paxlogging-camel > The findings from me is that, when PaxLoggingConsumer class [1] work together > with pax-logging-service (karaf 4.0.x), it creates new threads to process the > incoming PaxLoggingEvent and using MDC to filter the possible duplicated logs > from PaxAppenderProxy class [2]. > but when PaxLoggingConsumer class work together with pax-logging-log4j2, the > multi thread mechanism for processing the PaxLoggingEvent will lead to > duplicated/missing logs output to the camel Exchange. > Since the L63 from [3] fixed the possible duplicated logs come from > PaxAppenderProxy class, I found that the multi thread mechanism and MDC > checking can be removed from PaxLoggingConsumer class, then it works again as > expected from my test result. > [1] > https://github.com/apache/camel/blob/master/components/camel-paxlogging/src/main/java/org/apache/camel/component/paxlogging/PaxLoggingConsumer.java#L58 > [2] > https://github.com/ops4j/org.ops4j.pax.logging/blob/logging-1.9.1/pax-logging-service/src/main/java/org/ops4j/pax/logging/service/internal/PaxAppenderProxy.java#L63 > [3] > https://github.com/ops4j/org.ops4j.pax.logging/blob/logging-1.9.1/pax-logging-log4j2/src/main/java/org/ops4j/pax/logging/log4j2/internal/PaxAppenderProxy.java#L63 -- This message was sent by Atlassian JIRA (v6.3.15#6346)