hadoop-common-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Todd Lipcon (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7901) Have Configuration use Read/Write Locks
Date Fri, 09 Dec 2011 17:52:39 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13166363#comment-13166363
] 

Todd Lipcon commented on HADOOP-7901:
-------------------------------------

Where are you seeing contention on the Configuration object? The downside of rwlock is (a)
increased memory usage, and (b) higher constant overhead, in my experience. Not that I'm against
it, just would like to know more about the motivation.
                
> Have Configuration use Read/Write Locks
> ---------------------------------------
>
>                 Key: HADOOP-7901
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7901
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: conf
>    Affects Versions: 0.23.1
>            Reporter: Robert Joseph Evans
>            Assignee: Robert Joseph Evans
>
> We can potentially improve performance by moving to read/write locks for configuration
instead of the current synchronization. 

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message