[jira] [Created] (TIKA-3842) Revert slf4j core back to 1.x?

["Tim Allison (Jira)" <ji...@apache.org>]

Tim Allison created TIKA-3842:
---------------------------------

             Summary: Revert slf4j core back to 1.x?
                 Key: TIKA-3842
                 URL: https://issues.apache.org/jira/browse/TIKA-3842
             Project: Tika
          Issue Type: Improvement
            Reporter: Tim Allison


We're now getting warning after the upgrade from slf4j 1.x to 2.x: 
{noformat}
SLF4J: No SLF4J providers were found.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#noProviders for further details.
SLF4J: Class path contains SLF4J bindings targeting slf4j-api versions prior to 1.8.
SLF4J: Ignoring binding found at [jar:file:/home/tallison/.m2/repository/org/apache/logging/log4j/log4j-slf4j-impl/2.18.0/log4j-slf4j-impl-2.18.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#ignoredBindings for an explanation.
{noformat}

These are explained here: https://www.slf4j.org/codes.html  with some further explanation here: https://www.slf4j.org/faq.html#changesInVersion200

I think the underlying issue is that there isn't yet a log4j2 bridge for slf4j 2.x: https://issues.apache.org/jira/browse/LOG4J2-3139

Should we revert slf4j back to 1.x until this is resolved?



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