helianthuslulu opened a new issue #6817: 【druid-01.2.3】how to debug druid 
during ingesting
URL: https://github.com/apache/incubator-druid/issues/6817
 
 
   Hi,team. I met a  question about debugging druid during ingesting from kafka 
indexing service need your help.  
   I want to print debug message in peon log and every service 
log(overload.log,middlemanager.log),I followed the instructions in 
http://druid.io/docs/latest/configuration/logging.html :: 
   example as below**,I try to change overload log lever to debug**.
   
   > (1):overlord/jvm.config
   
   **add "-Ddruid.emitter.logging.logLevel=debug"**
   
   > (2) _common/log4j2.xml
   
   **<?xml version="1.0" encoding="UTF-8" ?>
   <Configuration status="WARN">
       <Appenders>
           <Console name="Console" target="SYSTEM_OUT">
               <PatternLayout pattern="%d{ISO8601} %p [%t] %c - %m%n"/>
           </Console>
       </Appenders>
       <Loggers>
           <Root level="info">
               <AppenderRef ref="Console"/>
           </Root>
   <!-- Uncomment to enable logging of all HTTP requests -->
            <Logger name="org.apache.druid.jetty.RequestLog" additivity="false" 
level="DEBUG">
           <AppenderRef ref="Console"/>
       </Logger>
       </Loggers>
   </Configuration>**
   
   > (3)restart overload service
   BUT,no debug info appeared in overload.log
   
   Looking forward to your reply. and thanks for any reply so much.

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