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Posted to common-dev@hadoop.apache.org by "Luca Telloli (JIRA)" <ji...@apache.org> on 2009/01/23 16:01:00 UTC

[jira] Commented: (HADOOP-414) replace class UTF8 with class Text

    [ https://issues.apache.org/jira/browse/HADOOP-414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12666555#action_12666555 ] 

Luca Telloli commented on HADOOP-414:
-------------------------------------

My vote also on this issue. From some profiling I did, it looks like the NameNode is spending 2% of the CPU time on UTF8, and it could save about 40% of it by using Text. 

> replace class UTF8 with class Text
> ----------------------------------
>
>                 Key: HADOOP-414
>                 URL: https://issues.apache.org/jira/browse/HADOOP-414
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: io
>    Affects Versions: 0.5.0
>            Reporter: Hairong Kuang
>            Assignee: Owen O'Malley
>         Attachments: utf2text.patch
>
>
> Since class UTF8 is deprecated, all references of UTF8 in hadoop should be replaced with class Text if the change does not break the system. 

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