Log4j 1.x was declared End of Life in August 2015
(https://blogs.apache.org/foundation/entry/apache_logging_services_project_announces).
Also, Log4j 1.2 is known to be broken on Java 9
(https://blogs.apache.org/logging/entry/moving_on_to_log4j_2).
Other than that, the people in this community have been focused on Log4j2 for
several years and I actually don't think there is anyone here with Log4j 1.x
expertise.
If you're willing to migrate to Log4j2 we may be able to help.
Remko
> On Oct 10, 2017, at 4:28, Shawn Heisey <apa...@elyograg.org> wrote:
>
> Solr is an Apache project that uses slf4j, with log4j 1.2 as the final
> logging destination.
>
> In one of the classes in Solr, specifically the SolrCore class, these
> are the loggers defined:
>
> private static final Logger log =
> LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
> public static final Logger requestLog =
> LoggerFactory.getLogger(MethodHandles.lookup().lookupClass().getName() +
> ".Request");
>
> I would like to define an additional logger like this:
>
> private static final Logger slowLog =
> LoggerFactory.getLogger(MethodHandles.lookup().lookupClass().getName() +
> ".SlowRequest");
>
> Between the lines below is the log4j.properties file that Solr includes
> out of the box:
>
> ==============
> # Default Solr log4j config
> # rootLogger log level may be programmatically overridden by
> -Dsolr.log.level
> solr.log=${solr.log.dir}
> log4j.rootLogger=INFO, file, CONSOLE
>
> # Console appender will be programmatically disabled when Solr is
> started with option -Dsolr.log.muteconsole
> log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
> log4j.appender.CONSOLE.layout=org.apache.log4j.EnhancedPatternLayout
> log4j.appender.CONSOLE.layout.ConversionPattern=%d{yyyy-MM-dd
> HH:mm:ss.SSS} %-5p (%t) [%X{collection} %X{shard} %X{replica} %X{core}]
> %c{1.} %m%n
>
> #- size rotation with log cleanup.
> log4j.appender.file=org.apache.log4j.RollingFileAppender
> log4j.appender.file.MaxFileSize=4MB
> log4j.appender.file.MaxBackupIndex=9
>
> #- File to log to and log format
> log4j.appender.file.File=${solr.log}/solr.log
> log4j.appender.file.layout=org.apache.log4j.EnhancedPatternLayout
> log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss.SSS}
> %-5p (%t) [%X{collection} %X{shard} %X{replica} %X{core}] %c{1.} %m%n
>
> # Adjust logging levels that should differ from root logger
> log4j.logger.org.apache.zookeeper=WARN
> log4j.logger.org.apache.hadoop=WARN
> log4j.logger.org.eclipse.jetty=WARN
> log4j.logger.org.eclipse.jetty.server.Server=INFO
> log4j.logger.org.eclipse.jetty.server.ServerConnector=INFO
>
> # set to INFO to enable infostream log messages
> log4j.logger.org.apache.solr.update.LoggingInfoStream=OFF
> ==============
>
> I would like to add some commented out lines to the stock properties
> file which will allow a user to uncomment the lines to enable a separate
> "slow query" logfile. The full logger name would be
> org.apache.solr.core.SolrCore.SlowRequest for these logs. In addition to
> directing logs for this logger (which will be at the WARN level) to the
> separate file, the commented config should *remove* those lines from the
> main solr.log file, if that is possible.
>
> I have not been able to determine what configuration would produce these
> results. Can this list help? One thing I have considered is converting
> to the XML config format, but I have not been able to locate any
> resources for making that conversion.
>
> Thanks,
> Shawn
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: log4j-user-unsubscr...@logging.apache.org
> For additional commands, e-mail: log4j-user-h...@logging.apache.org
>
