You are viewing a plain text version of this content. The canonical link for it is here.

Posted to common-issues@hadoop.apache.org by "Brandon Li (JIRA)" <ji...@apache.org> on 2013/09/17 22:58:12 UTC

[jira] [Updated] (HADOOP-9669) Reduce the number of byte array creations and copies in XDR data manipulation

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

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

    Summary: Reduce the number of byte array creations and copies in XDR data manipulation  (was: There are multiple array creations and array copies for a single nfs rpc reply)
    
> 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
>         Attachments: HADOOP-9669.001.patch, HADOOP-9669.002.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(..).

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira