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From "Dmytro Molkov (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HDFS-1571) Improve performance of audit log
Date Fri, 07 Jan 2011 00:04:47 GMT

     [ https://issues.apache.org/jira/browse/HDFS-1571?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dmytro Molkov resolved HDFS-1571.
---------------------------------

    Resolution: Duplicate

Nevermind this JIRA. I did not realize it was fixed in HDFS-1087 a while back

> Improve performance of audit log
> --------------------------------
>
>                 Key: HDFS-1571
>                 URL: https://issues.apache.org/jira/browse/HDFS-1571
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Dmytro Molkov
>
> We currently use java Formatter for audit log formatting. I've done some experiments
with it versus simply creating a string of the same format using StringBuilder and apparently
if we were to use StringBuilder we can make audit log function 5-10x faster.
> Since it is a useful feature and the namenode under heavy load logs a lot this performance
improvement is worth it.

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