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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3461) Remove dfs.StringBytesWritbale
Date Sat, 01 Nov 2008 01:17:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3461?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12644480#action_12644480
] 

Tsz Wo (Nicholas), SZE commented on HADOOP-3461:
------------------------------------------------

There are ~10% improvement for NNThroughputBenchmark -op create.

> Remove dfs.StringBytesWritbale
> ------------------------------
>
>                 Key: HADOOP-3461
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3461
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: dfs
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>             Fix For: 0.20.0
>
>         Attachments: 3461_20081030.patch
>
>
> In dfs, some classes, such as INodeFileUnderConstruction use, StringBytesWritbale as
member type.  The values are converted from String to StringBytesWritbale in setter and converted
back to String in getter.  These overhead is unnecessary.
> StringBytesWritbale is not used in RPC nor dfs image.  No version change will be introduced.

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