hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3981) Need a distributed file checksum algorithm for HDFS
Date Tue, 16 Sep 2008 07:47:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3981?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo (Nicholas), SZE updated HADOOP-3981:
-------------------------------------------

       Resolution: Fixed
    Fix Version/s: 0.19.0
     Hadoop Flags: [Reviewed]
           Status: Resolved  (was: Patch Available)

I just committed this.

> Need a distributed file checksum algorithm for HDFS
> ---------------------------------------------------
>
>                 Key: HADOOP-3981
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3981
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: dfs
>            Reporter: Tsz Wo (Nicholas), SZE
>            Assignee: Tsz Wo (Nicholas), SZE
>             Fix For: 0.19.0
>
>         Attachments: 3981_20080909.patch, 3981_20080910.patch, 3981_20080910b.patch,
3981_20080912.patch
>
>
> Traditional message digest algorithms, like MD5, SHA1, etc., require reading the entire
input message sequentially in a central location.  HDFS supports large files with multiple
tera bytes.  The overhead of reading the entire file is huge. A distributed file checksum
algorithm is needed for HDFS.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message