Enabling DEBUG logging in drill
#Edit the logback.xml under the configuration dirctory
#Modify / add the below property
<logger name="org.apache.drill" additivity="false">
<level value="DEBUG" />
<appender-ref ref="FILE" />
</logger>
<logger name="query.logger" additivity="false">
<level value="DEBUG" />
<appender-ref ref="QUERY" />
<!-- <appender-ref ref="SOCKET" /> -->
</logger>
#Modify the logger level as debug
#Kill / restart the drill-bits
#Now you must be able to see the drillbits generating debug log
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