到新公司接手了別人的Kettle ETL作業。
發現每次啟動 Kettle ，日志中都會出現下面的錯誤，雖然不影響運行結果，但是看着不爽：
18:41:15,327 INFO [KarafInstance] ******************************************************************************* *** Karaf Instance Number: 2 at /server/software/pdi-ce-6.1.0.1-196/data-in *** *** tegration/./system/karaf/caches/default/data-18 *** *** Karaf Port:8803 *** *** OSGI Service Port:9052 *** ******************************************************************************* 18:41:15,328 INFO [KarafBoot] Checking to see if org.pentaho.clean.karaf.cache is enabled 六月 08, 2018 6:41:16 下午 org.apache.karaf.main.Main$KarafLockCallback lockAquired 信息: Lock acquired. Setting startlevel to 100 2018/06/08 18:41:16 - Kitchen - Start of run. 2018/06/08 18:41:16 - RepositoriesMeta - Reading repositories XML file: /home/John.Liu/.kettle/repositories.xml 2018/06/08 18:41:17 - cfgbuilder - Warning: The configuration parameter [org] is not supported by the default configuration builder for scheme: sftp 18:41:17,808 ERROR [BootFeaturesInstaller] Error Boot feature pdi-dataservice not found 18:41:17,808 ERROR [BootFeaturesInstaller] Error Boot feature pentaho-client not found 18:41:17,808 ERROR [BootFeaturesInstaller] Error Boot feature pentaho-metaverse not found 18:41:17,808 ERROR [BootFeaturesInstaller] Error Boot feature pdi-data-refinery not found 18:41:17,808 ERROR [BootFeaturesInstaller] Error Boot feature config not found 六月 08, 2018 6:41:18 下午 org.pentaho.caching.impl.PentahoCacheManagerFactory$RegistrationHandler$1 onSuccess
解決方法（公司使用的是 6.1 版本，其他版本沒用過）：
修改<pdi_home>/system/karaf/etc/org.apache.karaf.features.cfg
把featuresBoot=config,pentaho-client,pentaho-metaverse,pdi-dataservice,pdi-data-refinery
改成featuresBoot=config,pentaho-client,pentaho-metaverse,pdi-dataservice
然后刪除 <pdi_home>/system/karaf/caches目錄