[ 
https://issues.apache.org/jira/browse/HADOOP-5635?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12696585#action_12696585
 ] 

Craig Macdonald commented on HADOOP-5635:
-----------------------------------------

Wouldn't it be generally better if Hadoop was configured with a list of shared 
file systems. Then, when the administrator permitted, users could use shared 
NFS filesystems as sources and targets for map reduce jobs. E.g., in our setup, 
/local/ and /users/ are shared to all nodes. If we wanted to do a quick map 
reduce test on stuff storied in /local/ we would have to copy to the DFS, when 
it would be OK to run as is.

{noformat}
<name>fs.shared.filesystems</name>
<value>hdfs://,file://users/,file://local/ </value>
{noformat}

> distributed cache doesn't work with other distributed file systems
> ------------------------------------------------------------------
>
>                 Key: HADOOP-5635
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5635
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: filecache
>            Reporter: Andrew Hitchcock
>            Priority: Minor
>         Attachments: fix-distributed-cache.patch
>
>
> Currently the DistributedCache does a check to see if the file to be included 
> is an HDFS URI. If the URI isn't in HDFS, it returns the default filesystem. 
> This prevents using other distributed file systems -- such as s3, s3n, or kfs 
>  -- with distributed cache. When a user tries to use one of those 
> filesystems, it reports an error that it can't find the path in HDFS.

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

Reply via email to