Hi, we upgraded from Karaf 4.0.4 to 4.0.5 and now we have a non-deterministic start behavior with our custom log appenders which lead to multiple error-like output on the console.
We implemented our appender regarding to http://blog.nanthrax.net/2012/12/create-custom-log4j-appender-for-karaf-and-pax-logging/ and http://karaf.apache.org/manual/latest/#_advanced_configuration (Custom appenders section) startup.properties: ----------------------- mvn\:org.ops4j.pax.logging/pax-logging-api/1.8.5 = 8 mvn\:org.ops4j.pax.logging/pax-logging-service/1.8.5 = 8 mvn\:my.group/my.logging.fragment/1.0 = 8 (No behavior change if the fragment is moved before the service bundle as mentioned in the second link). MANIFEST.MF: ------------------ ... Bundle-SymbolicName: my.logging.fragment Fragment-Host: org.ops4j.pax.logging.pax-logging-service ... Now an example first start output is: $ > karaf.bat The specified feature: 'instance' version '4.0.5' is already installed The specified feature: 'package' version '4.0.5' is already installed The specified feature: 'log' version '4.0.5' is already installed The specified feature: 'ssh' version '4.0.5' is already installed The specified feature: 'aries-blueprint' version '4.0.5' is already installed The specified feature: 'framework' version '4.0.5' is already installed The specified feature: 'system' version '4.0.5' is already installed The specified feature: 'feature' version '4.0.5' is already installed The specified feature: 'shell' version '4.0.5' is already installed The specified feature: 'management' version '4.0.5' is already installed The specified feature: 'service' version '4.0.5' is already installed The specified feature: 'jaas' version '4.0.5' is already installed The specified feature: 'shell-compat' version '4.0.5' is already installed The specified feature: 'deployer' version '4.0.5' is already installed The specified feature: 'diagnostic' version '4.0.5' is already installed The specified feature: 'wrap' version '0.0.0' is already installed The specified feature: 'bundle' version '4.0.5' is already installed The specified feature: 'config' version '4.0.5' is already installed The specified feature: 'kar' version '4.0.5' is already installed The specified feature: 'instance' version '4.0.5' is already installed The specified feature: 'package' version '4.0.5' is already installed The specified feature: 'log' version '4.0.5' is already installed The specified feature: 'ssh' version '4.0.5' is already installed The specified feature: 'aries-blueprint' version '4.0.5' is already installed The specified feature: 'framework' version '4.0.5' is already installed The specified feature: 'system' version '4.0.5' is already installed The specified feature: 'feature' version '4.0.5' is already installed The specified feature: 'shell' version '4.0.5' is already installed The specified feature: 'management' version '4.0.5' is already installed The specified feature: 'service' version '4.0.5' is already installed The specified feature: 'jaas' version '4.0.5' is already installed The specified feature: 'shell-compat' version '4.0.5' is already installed The specified feature: 'deployer' version '4.0.5' is already installed The specified feature: 'diagnostic' version '4.0.5' is already installed The specified feature: 'wrap' version '0.0.0' is already installed The specified feature: 'bundle' version '4.0.5' is already installed The specified feature: 'config' version '4.0.5' is already installed The specified feature: 'kar' version '4.0.5' is already installed __ __ ____ / //_/____ __________ _/ __/ / ,< / __ `/ ___/ __ `/ /_ / /| |/ /_/ / / / /_/ / __/ /_/ |_|\__,_/_/ \__,_/_/ Apache Karaf (4.0.5) Hit '<tab>' for a list of available commands and '[cmd] --help' for help on a specific command. Hit '<ctrl-d>' or type 'system:shutdown' or 'logout' to shutdown Karaf. karaf@root()> __ __ ____ / //_/____ __________ _/ __/ / ,< / __ `/ ___/ __ `/ /_ / /| |/ /_/ / / / /_/ / __/ /_/ |_|\__,_/_/ \__,_/_/ Apache Karaf (4.0.5) Hit '<tab>' for a list of available commands and '[cmd] --help' for help on a specific command. Hit '<ctrl-d>' or type 'system:shutdown' or 'logout' to shutdown Karaf. karaf@root()> Not a copy'n'paste mistake - really duplicated output. As this did not happen in Karaf 2, 3 and 4.0.4 I think this could be bug in the new boot feature "framework" which has been added in 4.0.5. It seems that the whole core is restarted when the custom logging fragment is there. Do you agree with me and should I raise a Jira issue for that? And in case this is a bug - do you have an idea for a workaround? Or could it be an implementation mistake of the appender? We ship a custom distribution to our customers and this behavior is a no-go because they could think that something failed even at the end the application has started correctly. It does not make a good impression when the customers are faced with some strange messages even at the first start. TIA & Regards Volker CENIT AG, Industriestrasse 52-54, 70565 Stuttgart, Tel.: +49 711 7825-30, Fax: +49 711 7825-4000, Internet: www.cenit.com Geschaeftsstellen: Berlin, Frankfurt, Hamburg, Hannover, Muenchen, Oelsnitz, Ratingen, Saarbruecken Vorstandsmitglieder: Kurt Bengel, Matthias Schmidt Aufsichtsratsmitglieder: Andreas Schmidt (Vorsitzender des Aufsichtsrats), Hubert Leypoldt, Andreas Karrer Bankverbindungen: Deutsche Bank (BLZ 600 700 70) Kto. 1661 040 IBAN : DE85 6007 0070 0166 1040 00 SWIFT-CODE : DEUTDESS, Commerzbank (BLZ 600 400 71) Kto. 532 015 500 IBAN : DE83 6004 0071 0532 0155 00 SWIFT-Code : COBADEFF600, Registergericht: Amtsgericht Stuttgart Handelsregister: HRB Nr. 19117 Umsatzsteuer: ID-Nr. DE 147 862 777
