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Posted to common-issues@hadoop.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2012/05/20 05:50:42 UTC
[jira] [Commented] (HADOOP-7834) Support posix_fallocate in
NativeIO and add call from DataNode code
[ https://issues.apache.org/jira/browse/HADOOP-7834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13279656#comment-13279656 ]
Todd Lipcon commented on HADOOP-7834:
-------------------------------------
Would be interesting to see if this improves MR code, too, if we were to hook it into intermediate file spills. We generally have a pretty good estimate of the size of the intermediate files before we begin writing them.
> Support posix_fallocate in NativeIO and add call from DataNode code
> -------------------------------------------------------------------
>
> Key: HADOOP-7834
> URL: https://issues.apache.org/jira/browse/HADOOP-7834
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: io, native, performance
> Reporter: Sriram Rao
>
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