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Posted to common-dev@hadoop.apache.org by "Konstantin Shvachko (JIRA)" <ji...@apache.org> on 2007/04/18 20:41:15 UTC

[jira] Updated: (HADOOP-1268) Replace Vector types by ArrayList in FSDirectory

     [ https://issues.apache.org/jira/browse/HADOOP-1268?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Konstantin Shvachko updated HADOOP-1268:
----------------------------------------

    Component/s: dfs

> Replace Vector types by ArrayList in FSDirectory
> ------------------------------------------------
>
>                 Key: HADOOP-1268
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1268
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: dfs
>    Affects Versions: 0.10.0, 0.11.0, 0.12.0
>            Reporter: Konstantin Shvachko
>             Fix For: 0.13.0
>
>
> FSDirectory contains local variables that are declared Vector but are used within a
> synchronized{ ... } block. Extra synchronization provided by Vector is redundant in the case.
> Using ArrayLists instead should boost the performance.

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