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From "Brandon Li (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-9967) Zero copies in hdfs-nfs
Date Tue, 17 Sep 2013 17:34:53 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-9967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Li updated HADOOP-9967:
-------------------------------

    Component/s: nfs
    
> Zero copies in hdfs-nfs
> -----------------------
>
>                 Key: HADOOP-9967
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9967
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: nfs
>            Reporter: Haohui Mai
>
> There are multiple copies in the NFS request / response paths. For example, The RPCFrameDecoder
class always copies the data. Currently these copies are mandatory, due to the inflexibilities
of several internal APIs.
> Using the ChannelBuffer class in the APIs should these excessive copies in the NFS path.

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