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From "Claus Ibsen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CAMEL-11352) duplicated/missing logs when camel-paxlogging work with pax-logging-log4j2
Date Sun, 28 May 2017 14:46:04 GMT

    [ https://issues.apache.org/jira/browse/CAMEL-11352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16027837#comment-16027837
] 

Claus Ibsen commented on CAMEL-11352:
-------------------------------------

So are you saying its a issue that is fixed in pax-logging. 

> 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
>
> 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



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