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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-8649) ChecksumFileSystem should have an overriding implementation of listStatus(Path, PathFilter) for improved performance
Date Thu, 09 Aug 2012 14:44:19 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-8649?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Karthik Kambatla updated HADOOP-8649:
-------------------------------------

    Attachment: trunk-HADOOP-8649.patch
                branch1-HADOOP-8649.patch

Uploading updated patches for branch1 and trunk.
                
> ChecksumFileSystem should have an overriding implementation of listStatus(Path, PathFilter)
for improved performance
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-8649
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8649
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 1.0.3, 2.0.0-alpha
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>         Attachments: HADOOP-8649_branch1.patch, HADOOP-8649_branch1.patch, HADOOP-8649_branch1.patch_v2,
HADOOP-8649_branch1.patch_v3, TestChecksumFileSystemOnDFS.java, branch1-HADOOP-8649.patch,
branch1-HADOOP-8649.patch, trunk-HADOOP-8649.patch, trunk-HADOOP-8649.patch
>
>
> Currently, ChecksumFileSystem implements only listStatus(Path). 
> The other form of listStatus(Path, customFilter) results in parsing the list twice to
apply each of the filters - custom and checksum filter.
> By using a composite filter instead, we limit the parsing to once.

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