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From "Rajini Sivaram (JIRA)" <j...@apache.org>
Subject [jira] [Created] (KAFKA-7237) Add explicit fatal marker to fatal error messages
Date Thu, 02 Aug 2018 09:41:00 GMT
Rajini Sivaram created KAFKA-7237:
-------------------------------------

             Summary: Add explicit fatal marker to fatal error messages
                 Key: KAFKA-7237
                 URL: https://issues.apache.org/jira/browse/KAFKA-7237
             Project: Kafka
          Issue Type: Bug
          Components: core
            Reporter: Rajini Sivaram


We currently use FATAL markers for fatal error messages in core. But only logback supports
markers out-of-the-box and log4j simply logs these as ERROR messages, ignoring the marker.
We should perhaps include a String marker within these messages to make it easier to identify
fatal messages in logs.

>From https://www.slf4j.org/faq.html:

 

While markers are part of the SLF4J API, only logback supports markers off the shelf. For
example, if you add the {{%marker}}conversion word to its pattern, logback's {{PatternLayout}}
will add marker data to its output. Marker data can be used to [filter messages|http://logback.qos.ch/manual/filters.html]
or even [trigger|http://logback.qos.ch/manual/appenders.html#OnMarkerEvaluator] an outgoing
email [at the end of an individual transaction|http://logback.qos.ch/recipes/emailPerTransaction.html].

In combination with logging frameworks such as log4j and java.util.logging which do not support
markers, marker data will be silently ignored.



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