[
https://issues.apache.org/jira/browse/HDFS-13701?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Shilun Fan updated HDFS-13701:
------------------------------
Target Version/s: 3.5.0 (was: 3.4.0)
> Removal of logging guards regressed performance
> -----------------------------------------------
>
> Key: HDFS-13701
> URL: https://issues.apache.org/jira/browse/HDFS-13701
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: performance
> Affects Versions: 3.0.0
> Reporter: Todd Lipcon
> Priority: Major
>
> HDFS-8971 removed various logging guards from hot methods in the DFS client.
> In theory using a format string with {} placeholders is equivalent, but in
> fact it's not equivalent when one or more of the variable arguments are
> primitives. To be passed as part of the varargs array, the primitives need to
> be boxed. I am seeing Integer.valueOf() inside BlockReaderLocal.read taking
> ~3% of CPU.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
