NullPointerException during startup
-----------------------------------

                 Key: OFBIZ-1065
                 URL: https://issues.apache.org/jira/browse/OFBIZ-1065
             Project: OFBiz
          Issue Type: Bug
          Components: framework
    Affects Versions: SVN trunk
            Reporter: Oleg Andreyev
            Priority: Minor


Since rev.541008 log4j AsyncAppender trow a NullPointerException during OFBiz 
startup.

Exception in thread "Dispatcher-Thread-1" java.lang.NullPointerException
        at java.lang.String.lastIndexOf(String.java:1654)
        at java.lang.String.lastIndexOf(String.java:1636)
        at org.apache.log4j.spi.LocationInfo.<init>(LocationInfo.java:119)
        at org.apache.log4j.spi.LoggingEvent.getLocationInformation(LoggingEvent
.java:191)
        at org.apache.log4j.helpers.PatternParser$LocationPatternConverter.conve
rt(PatternParser.java:483)
        at org.apache.log4j.helpers.PatternConverter.format(PatternConverter.jav
a:64)
        at org.apache.log4j.PatternLayout.format(PatternLayout.java:503)
        at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:301)
        at org.apache.log4j.RollingFileAppender.subAppend(RollingFileAppender.ja
va:236)
        at org.apache.log4j.WriterAppender.append(WriterAppender.java:159)
        at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:230)

        at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders
(AppenderAttachableImpl.java:65)
        at org.apache.log4j.AsyncAppender$Dispatcher.run(AsyncAppender.java:578)

        at java.lang.Thread.run(Thread.java:595)

Solutions are:
1. Remove tag <param name="blocking" value="false"/> from async appender 
section or make it value true. This reverts logging to sync mode.
2. Migrate to log4j 1.12.15 
(http://issues.apache.org/bugzilla/show_bug.cgi?id=41186)

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