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https://issues.apache.org/jira/browse/LOG4J2-51?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13114739#comment-13114739
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John Vasileff commented on LOG4J2-51:
-------------------------------------
Yes, the patch in LOG4J2-50 is required to fix CategoryTest.testClassName().
Where is the ClassCastException occurring? I wonder if this is due to some
interaction between the IDE and mvn build where a mix of old and new versions
are being used. Something like this happened to me, but after clean, etc., it
cleared up.
$ git log --oneline | head
276d6e1 cleanup FQCN code
bac5439 remove dangerous logger factory override
12a7861 fix for Category.getInstance returning cached Logger
d6e9975 add test for Category when using a log4j2 Logger
2db42d3 Enhance comments on getThrowable
cdc19e5 Test that class name in log message is correct
$ mvn clean test
...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] ------------------------------------------------------------------------
[INFO] Apache Log4j 2 ........................................ SUCCESS [1.454s]
[INFO] Log4J API ............................................. SUCCESS [2.689s]
[INFO] Log4J2 Core ........................................... SUCCESS
[1:03.924s]
[INFO] Log4J Compatibility API ............................... SUCCESS [3.471s]
[INFO] SLF4J Binding ......................................... SUCCESS [2.244s]
[INFO] Log4J2 Commons Logging ................................ SUCCESS [1.964s]
[INFO] ------------------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1 minute 16 seconds
[INFO] Finished at: Mon Sep 26 11:55:33 EDT 2011
[INFO] Final Memory: 37M/265M
[INFO] ------------------------------------------------------------------------
$ cat log4j12-api/target/surefire-reports/org.apache.log4j.CategoryTest.txt
-------------------------------------------------------------------------------
Test set: org.apache.log4j.CategoryTest
-------------------------------------------------------------------------------
Tests run: 7, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.657 sec
> ClassCastException in Category logger
> -------------------------------------
>
> Key: LOG4J2-51
> URL: https://issues.apache.org/jira/browse/LOG4J2-51
> Project: Log4j 2
> Issue Type: Bug
> Components: log4j 1.2 emulation
> Reporter: John Vasileff
> Priority: Blocker
> Attachments:
> 0001-add-test-for-Category-when-using-a-log4j2-Logger.patch,
> 0002-fix-for-Category.getInstance-returning-cached-Logger.patch,
> 0003-remove-dangerous-logger-factory-override.patch
>
>
> When a Category is "created" with the same name as a previously created
> log4j2 Logger, a ClassCastException occurs when calling category.l7dlog(...)
> and others.
> See LOG4J2-50 for additional symptoms.
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