zhengchenyu created MAPREDUCE-7453:
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             Summary: Container logs are missing when 
yarn.app.container.log.filesize is set to default value 0.
                 Key: MAPREDUCE-7453
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7453
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
    Affects Versions: 3.3.6
            Reporter: zhengchenyu
            Assignee: zhengchenyu


Since HADOOP-18649, in container-log4j.properties, 
log4j.appender.\{APPENDER}.MaxFileSize is set to 
${yarn.app.container.log.filesize}, but yarn.app.container.log.filesize is 0 in 
default. So log is missing. This log is always rolling and only show the latest 
log.

This is the running log like below:
{code:java}
Log Type: syslog
Log Upload Time: Fri Sep 08 11:36:09 +0800 2023
Log Length: 0

Log Type: syslog.1
Log Upload Time: Fri Sep 08 11:36:09 +0800 2023
Log Length: 179
2023-09-08 11:31:34,494 INFO [AsyncDispatcher event handler] 
org.apache.hadoop.yarn.util.RackResolver: Got an error when resolve hostNames. 
Falling back to /default-rack for all.  {code}
Note: log4j.appender.\{APPENDER}.MaxFileSize is not set before, then use 
default value 10M, so no problem before HADOOP-18649



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