hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Sameer Paranjpye (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HADOOP-731) Sometimes when a dfs file is accessed and one copy has a checksum error the I/O command fails, even if another copy is alright.
Date Thu, 04 Jan 2007 21:45:27 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-731?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sameer Paranjpye resolved HADOOP-731.
-------------------------------------

    Resolution: Duplicate

Duplicated in HADOOP-855

> Sometimes when a dfs file is accessed and one copy has a checksum error the I/O command
fails, even if another copy is alright.
> -------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-731
>                 URL: https://issues.apache.org/jira/browse/HADOOP-731
>             Project: Hadoop
>          Issue Type: Bug
>          Components: dfs
>    Affects Versions: 0.7.2
>            Reporter: Dick King
>         Assigned To: Sameer Paranjpye
>
> for a particular file [alas, the file no longer exists -- I had to progress]  
>     $dfs -cp foo bar        
> and
>     $dfs -get foo local
> failed on a checksum error.  The dfs browser's download function retrieved the file,
so either that function doesn't check, or more likely the download function got a different
copy.
> When a checksum fails on one copy of a file that is redundantly stored, I would prefer
that dfs try a different copy, mark the bad one as not existing [which should induce a fresh
copy being made from one of the good copies eventually], and make the call continue to work
and deliver bytes.
> Ideally, if all copies have checksum errors but it's possible to piece together a good
copy I would like that to be done.
> -dk

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: https://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message