[jboss-jira] [JBoss JIRA] (JBLOGGING-106) Log4jLoggerProvider clearNdc doesn't clear Ndc reference to threads

[William Burns (JIRA)]

William Burns created JBLOGGING-106:
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             Summary: Log4jLoggerProvider clearNdc doesn't clear Ndc reference to threads
                 Key: JBLOGGING-106
                 URL: https://issues.jboss.org/browse/JBLOGGING-106
             Project: JBoss Logging
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: jboss-logging-log4j
    Affects Versions: 3.1.2.GA
            Reporter: William Burns
            Assignee: James Perkins


The Log4jLoggerProvider have a method clearNdc on it that calls to the NDC.clear method.  Unfortunately this method only clears the Stack that log4j1.2 holds internally in it's NDC class.  Unfortunately this leaves the entry still in the NDC class for the current thread pointing to that stack.  If we use the remove method instead it will remove the entry from the NDC Hashtable and allow the thread to be GC'd if it is no longer running and referenced.

Without this change there is no way to clear the NDC table which will eventually cause an OOM unless we call directly into the log4j NDC class to clear it.



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