You may have seem there is a problem with Fuseki fulljar - the log4j2
setup is broken by shading.
The jena-fuseki-server jar works - but that is beginning to look like it
is due to chance.
Recorded as https://issues.apache.org/jira/browse/JENA-1900
Details:
https://lists.apache.org/thread.html/r794a7cc390a275f5db85541cbedf58666802fa987ae5b09aed49e61d%40%3Cusers.jena.apache.org%3E
I haven't found a workaround that will fix the released system - I was
hoping that a suitable log4j2.properties would at least mitigate the
problem but it is now looking to be more fundamental than that. A last
hope is to fix the jar file with a script.
The shade transformer solution does work but that's a rebuild.
Andy
-------- Forwarded Message --------
Subject: Fuseki 3.15.0 logging problems
Date: Tue, 19 May 2020 16:37:25 +0000
From: Franco Venturi <franco.vent...@availity.com.INVALID>
Reply-To: us...@jena.apache.org
To: us...@jena.apache.org <us...@jena.apache.org>
I just downloaded and started Fuseki 3.15.0, and I am now receiving
several error messages related to the logging subsystem when it starts
up (timestamps are in UTC):
2020-05-19 15:05:43,040 main ERROR Unrecognized format specifier [d]
2020-05-19 15:05:43,116 main ERROR Unrecognized conversion specifier [d]
starting at position 16 in conversion pattern.
2020-05-19 15:05:43,120 main ERROR Unrecognized format specifier [thread]
2020-05-19 15:05:43,121 main ERROR Unrecognized conversion specifier
[thread] starting at position 25 in conversion pattern.
2020-05-19 15:05:43,125 main ERROR Unrecognized format specifier [level]
2020-05-19 15:05:43,126 main ERROR Unrecognized conversion specifier
[level] starting at position 35 in conversion pattern.
2020-05-19 15:05:43,126 main ERROR Unrecognized format specifier [logger]
2020-05-19 15:05:43,127 main ERROR Unrecognized conversion specifier
[logger] starting at position 47 in conversion pattern.
2020-05-19 15:05:43,127 main ERROR Unrecognized format specifier [msg]
2020-05-19 15:05:43,127 main ERROR Unrecognized conversion specifier
[msg] starting at position 54 in conversion pattern.
2020-05-19 15:05:43,128 main ERROR Unrecognized format specifier [n]
2020-05-19 15:05:43,128 main ERROR Unrecognized conversion specifier [n]
starting at position 56 in conversion pattern.
2020-05-19 15:05:43,157 main ERROR Unrecognized format specifier [d]
2020-05-19 15:05:43,161 main ERROR Unrecognized conversion specifier [d]
starting at position 16 in conversion pattern.
2020-05-19 15:05:43,162 main ERROR Unrecognized format specifier [thread]
2020-05-19 15:05:43,163 main ERROR Unrecognized conversion specifier
[thread] starting at position 25 in conversion pattern.
2020-05-19 15:05:43,164 main ERROR Unrecognized format specifier [level]
2020-05-19 15:05:43,165 main ERROR Unrecognized conversion specifier
[level] starting at position 35 in conversion pattern.
2020-05-19 15:05:43,165 main ERROR Unrecognized format specifier [logger]
2020-05-19 15:05:43,165 main ERROR Unrecognized conversion specifier
[logger] starting at position 47 in conversion pattern.
2020-05-19 15:05:43,166 main ERROR Unrecognized format specifier [msg]
2020-05-19 15:05:43,167 main ERROR Unrecognized conversion specifier
[msg] starting at position 54 in conversion pattern.
2020-05-19 15:05:43,168 main ERROR Unrecognized format specifier [n]
2020-05-19 15:05:43,168 main ERROR Unrecognized conversion specifier [n]
starting at position 56 in conversion pattern.
2020-05-19 15:05:43,547 main ERROR Unable to locate plugin type for Loggers
2020-05-19 15:05:43,547 main ERROR Unable to locate plugin type for
Appenders
2020-05-19 15:05:43,548 main ERROR Unable to locate plugin type for
ThresholdFilter
2020-05-19 15:05:43,568 main ERROR Unable to locate plugin for Logger
2020-05-19 15:05:43,569 main ERROR Unable to locate plugin for Logger
2020-05-19 15:05:43,577 main ERROR Unable to locate plugin for Logger
2020-05-19 15:05:43,578 main ERROR Unable to locate plugin for Logger
2020-05-19 15:05:43,578 main ERROR Unable to locate plugin for Logger
2020-05-19 15:05:43,579 main ERROR Unable to locate plugin for AppenderRef
2020-05-19 15:05:43,580 main ERROR Unable to locate plugin for Logger
2020-05-19 15:05:43,580 main ERROR Unable to locate plugin for Logger
2020-05-19 15:05:43,580 main ERROR Unable to locate plugin for Logger
2020-05-19 15:05:43,581 main ERROR Unable to locate plugin for Logger
2020-05-19 15:05:43,581 main ERROR Unable to locate plugin for AppenderRef
2020-05-19 15:05:43,582 main ERROR Unable to locate plugin for Root
2020-05-19 15:05:43,582 main ERROR Unable to locate plugin for Loggers
2020-05-19 15:05:43,583 main ERROR Unable to locate plugin for PatternLayout
2020-05-19 15:05:43,583 main ERROR Unable to locate plugin for Console
2020-05-19 15:05:43,584 main ERROR Unable to locate plugin for PatternLayout
2020-05-19 15:05:43,584 main ERROR Unable to locate plugin for Console
2020-05-19 15:05:43,585 main ERROR Unable to locate plugin for Appenders
2020-05-19 15:05:43,585 main ERROR Unable to locate plugin for
ThresholdFilter
2020-05-19 15:05:43,586 main ERROR Unrecognized format specifier [d]
2020-05-19 15:05:43,586 main ERROR Unrecognized conversion specifier [d]
starting at position 16 in conversion pattern.
2020-05-19 15:05:43,587 main ERROR Unrecognized format specifier [thread]
2020-05-19 15:05:43,587 main ERROR Unrecognized conversion specifier
[thread] starting at position 25 in conversion pattern.
2020-05-19 15:05:43,588 main ERROR Unrecognized format specifier [level]
2020-05-19 15:05:43,588 main ERROR Unrecognized conversion specifier
[level] starting at position 35 in conversion pattern.
2020-05-19 15:05:43,589 main ERROR Unrecognized format specifier [logger]
2020-05-19 15:05:43,589 main ERROR Unrecognized conversion specifier
[logger] starting at position 47 in conversion pattern.
2020-05-19 15:05:43,590 main ERROR Unrecognized format specifier [msg]
2020-05-19 15:05:43,590 main ERROR Unrecognized conversion specifier
[msg] starting at position 54 in conversion pattern.
2020-05-19 15:05:43,590 main ERROR Unrecognized format specifier [n]
2020-05-19 15:05:43,591 main ERROR Unrecognized conversion specifier [n]
starting at position 56 in conversion pattern.
Since I don’t have any custom log4j/log4j2 property files, I suspect
this issue could be due to JENA-1005
(https://issues.apache.org/jira/browse/JENA-1005 - Move off Log4j v1.),
which was releasedd in Fuseki 3.15.0.
I am running Fuseki as system service, i.e. with just the
‘fuseki-server.jar’ in the classpath (java -cp
/opt/fuseki/fuseki-server.jar org.apache.jena.fuseki.cmd.FusekiCmd).
Also I did some additional research, and I found that someone else was
having a possibly similar issue here:
https://www.arctype.co/blog/resolve-log4j2-conflicts-in-uberjars; if
this is the case, it is due to log4j2 bug LOG4J2-673
(https://issues.apache.org/jira/browse/LOG4J2-673), which apparently
won’t be resolved until log4j2 3.0.0.
That blog post also mentions of a couple of possible workarounds
(https://github.com/edwgiz/maven-shaded-log4j-transformer and
https://github.com/arctype-co/log4j2-plugins-cache).
Regards,
Franco Venturi
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