hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Raghu Angadi (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (HADOOP-3981) Need a distributed file checksum algorithm for HDFS
Date Thu, 11 Sep 2008 00:16:44 GMT

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

Raghu Angadi reassigned HADOOP-3981:
------------------------------------

    Assignee: Tsz Wo (Nicholas), SZE

> 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
>         Attachments: 3981_20080909.patch, 3981_20080910.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