hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3697) Enable fadvise readahead by default
Date Tue, 24 Jul 2012 00:20:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3697?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13421051#comment-13421051
] 

Todd Lipcon commented on HDFS-3697:
-----------------------------------

Hey Brandon. In the absence of the improvement discussed above, do you think we should commit
to branch-1? I ask, given you've been doing the other fadvise backports into branch-1.
                
> Enable fadvise readahead by default
> -----------------------------------
>
>                 Key: HDFS-3697
>                 URL: https://issues.apache.org/jira/browse/HDFS-3697
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: data-node, performance
>    Affects Versions: 3.0.0, 2.2.0-alpha
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Minor
>             Fix For: 3.0.0, 2.2.0-alpha
>
>         Attachments: hdfs-3697-branch-1.txt, hdfs-3697.txt, hdfs-3697.txt
>
>
> The fadvise features have been implemented for some time, and we've enabled them in production
at a lot of customer sites without difficulty. I'd like to enable the readahead feature by
default in future versions so that users get this benefit without any manual configuration
required.
> The other fadvise features seem to be more workload-dependent and need further testing
before enabling by default.

--
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