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From mikewalch <...@git.apache.org>
Subject [GitHub] accumulo pull request #221: ACCUMULO-4588 Simplify Accumulo logging configur...
Date Fri, 24 Feb 2017 18:18:34 GMT
Github user mikewalch commented on a diff in the pull request:

    https://github.com/apache/accumulo/pull/221#discussion_r102999845
  
    --- Diff: assemble/conf/log4j-service.properties ---
    @@ -15,42 +15,48 @@
     
     # Write out everything at the DEBUG level to the debug log
     log4j.appender.A2=org.apache.log4j.RollingFileAppender
    -log4j.appender.A2.File=${org.apache.accumulo.core.dir.log}/${org.apache.accumulo.core.application}${accumulo.service.instance}_${org.apache.accumulo.core.ip.localhost.hostname}_fromprops.debug.log
    -log4j.appender.A2.MaxFileSize=1000MB
    -log4j.appender.A2.MaxBackupIndex=10
    +log4j.appender.A2.File=${accumulo.log.dir}/${accumulo.application}${accumulo.service.instance}_${accumulo.local.hostname}.debug.log
    +log4j.appender.A2.MaxFileSize=100MB
    +log4j.appender.A2.MaxBackupIndex=5
     log4j.appender.A2.Threshold=DEBUG
     log4j.appender.A2.layout=org.apache.log4j.PatternLayout
     log4j.appender.A2.layout.ConversionPattern=%d{ISO8601} [%-8c{2}] %-5p: %m%n
     
     # Write out INFO and higher to the regular log
     log4j.appender.A3=org.apache.log4j.RollingFileAppender
    -log4j.appender.A3.File=${org.apache.accumulo.core.dir.log}/${org.apache.accumulo.core.application}${accumulo.service.instance}_${org.apache.accumulo.core.ip.localhost.hostname}_fromprops.log
    -log4j.appender.A3.MaxFileSize=1000MB
    -log4j.appender.A3.MaxBackupIndex=10
    +log4j.appender.A3.File=${accumulo.log.dir}/${accumulo.application}${accumulo.service.instance}_${accumulo.local.hostname}.log
    +log4j.appender.A3.MaxFileSize=100MB
    +log4j.appender.A3.MaxBackupIndex=5
    --- End diff --
    
    They were set to keep 20GB (10G for log & 10G for debug.log) of logs for each Accumulo
service (tserver, master, gc, etc).  I understand that a user might want to do that on a beefy
production node but I don't think it should be the default for users out of the box.  I have
run into the problem of disks filling up due to logs when running a SSD VMs in AWS if these
defaults are used.  This change will keep up to 1GB of logs per service on each node.


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