accumulo-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From joshelser <...@git.apache.org>
Subject [GitHub] accumulo pull request #109: ACCUMULO-4328: Run multiple tablet servers per h...
Date Mon, 06 Jun 2016 17:01:53 GMT
Github user joshelser commented on a diff in the pull request:

    https://github.com/apache/accumulo/pull/109#discussion_r65927663
  
    --- Diff: assemble/conf/templates/generic_logger.xml ---
    @@ -25,7 +25,7 @@
          <param name="MaxBackupIndex" value="10"/>
          <param name="Threshold"      value="DEBUG"/>
          <layout class="org.apache.log4j.PatternLayout">
    -       <param name="ConversionPattern" value="%d{ISO8601} [%-8c{2}] %-5p: %m%n"/>
    +       <param name="ConversionPattern" value="%d{ISO8601} [%-8c{2}] [pid:%6X{pid}]
%-5p: %m%n"/>
    --- End diff --
    
    > However this approach was problematic because logs would not be properly rolled and
aged off, which could lead to using up lots of disk space for orphaned tserver logs.
    
    That's a good point. We would want to make sure that the defined Appender configuration
works as intended for a single process (N processes each with up to X files of Z size).
    
    HBase added some stuff to their 2.0 branch which can manage multiple regionservers. At
a glance, they're using a number of track instances per host. If you run 3 RS on a host, the
first started RS would have a 1 in the log name, a 2 in the second, 3 in the third. This is
pushed down via a system property. I assume they have the RollingFileAppender working fine
but haven't checked myself.


---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastructure@apache.org or file a JIRA ticket
with INFRA.
---

Mime
View raw message