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From "Brandon Li (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-9669) Reduce the number of byte array creations and copies in XDR data manipulation
Date Wed, 18 Sep 2013 01:03:51 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-9669?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Li updated HADOOP-9669:
-------------------------------

    Fix Version/s: 2.1.1-beta
    
> Reduce the number of byte array creations and copies in XDR data manipulation
> -----------------------------------------------------------------------------
>
>                 Key: HADOOP-9669
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9669
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: nfs
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Haohui Mai
>             Fix For: 2.1.1-beta
>
>         Attachments: HADOOP-9669.001.patch, HADOOP-9669.002.patch, HADOOP-9669.003.patch,
HADOOP-9669.patch
>
>
> XDR.writeXxx(..) methods ultimately use the static XDR.append(..) for writing each data
type.  The static append creates a new array and copy data.  Therefore, for a singe reply
such as RpcAcceptedReply.voidReply(..), there are multiple array creations and array copies.
 For example, there are at least 6 array creations and array copies for RpcAcceptedReply.voidReply(..).

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