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https://issues.apache.org/jira/browse/TRAFODION-2596?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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liu ming closed TRAFODION-2596.
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> Improve the log4j and log4cxx infrastructure in Trafodion
> ---------------------------------------------------------
>
>                 Key: TRAFODION-2596
>                 URL: https://issues.apache.org/jira/browse/TRAFODION-2596
>             Project: Apache Trafodion
>          Issue Type: New Feature
>            Reporter: Selvaganesan Govindarajan
>            Assignee: Selvaganesan Govindarajan
>             Fix For: 2.2-incubating
>
>
> Currently SQL logs messages in different files identified by the master node 
> and pid in its name. This creates many log files in $TRAF_HOME/log directory 
> and makes it unmanageable.
> SQL primarily use log4cxx infrastructure for logging error messages and error 
> events. I believe error messages are written only when the master process 
> reads the diagnostics area and it is not written when the error originates.  
> But the error events(SQLMXLogging) might be written by any process.
> In addition, all other logs on the java side uses a single log file even when 
> it is written from multiple processes in our environment.  Eg 
> trafodion.hdfs.log trafodion.dtm.log. Even the C++ logging writes from 
> multiple processes. The amount of log entries written by SQL from C++ side is 
> way less than the any other logging within our environment. Definitely, they 
> pale in comparison with hbase, hive and other Hadoop processes.
> So, I think it will be neat solution to log the entries from all SQL 
> processes into one log file per node



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