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Mikael Ståldal commented on LOG4J2-1025: ---------------------------------------- I think we have a potential thread safety issue on the julToLog4j map now. > Custom java.util.logging.Level gives null Log4j Level > ----------------------------------------------------- > > Key: LOG4J2-1025 > URL: https://issues.apache.org/jira/browse/LOG4J2-1025 > Project: Log4j 2 > Issue Type: Bug > Components: JUL adapter > Affects Versions: 2.3 > Reporter: Mikael Ståldal > Attachments: LOG4J2-1025.patch > > > I use a 3rd party library which uses custom non-standard > java.util.logging.Level. > The Log4j JUL adapter will emit log event with level set to null in that > case, which causes NullPointerException in a Log4j filter further on. > This is not acceptable. When encountering an unrecognised JUL Level, the JUL > adapter should either: > - emit some default Log4j Level > - throw an Exception with a clear error message immediately > - silently discard the log event > - discard the log event and log a warning to the StatusLogger > {code} > java.lang.NullPointerException > at org.apache.logging.log4j.Level.isMoreSpecificThan(Level.java:163) > at > org.apache.logging.log4j.core.filter.BurstFilter.filter(BurstFilter.java:129) > at > org.apache.logging.log4j.core.filter.BurstFilter.filter(BurstFilter.java:101) > at > org.apache.logging.log4j.core.Logger$PrivateConfig.filter(Logger.java:295) > at org.apache.logging.log4j.core.Logger.isEnabled(Logger.java:122) > at > org.apache.logging.log4j.spi.ExtendedLoggerWrapper.isEnabled(ExtendedLoggerWrapper.java:87) > at > org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:699) > at > org.apache.logging.log4j.jul.WrappedLogger.log(WrappedLogger.java:50) > at org.apache.logging.log4j.jul.ApiLogger.log(ApiLogger.java:106) > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: log4j-dev-unsubscr...@logging.apache.org For additional commands, e-mail: log4j-dev-h...@logging.apache.org