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Posted to common-dev@hadoop.apache.org by Torsten Curdt <tc...@apache.org> on 2007/10/10 10:33:37 UTC

read-only

Any thoughts on how to make files in hdfs read-only? We would like to  
protect some files.
How could that be implemented?

cheers
--
Torsten

Re: read-only

Posted by Konstantin Shvachko <sh...@yahoo-inc.com>.

HDFS files are read-only, that is you cannot modify them after they are 
created written to and closed.
But you can always remove them. There is no protection against that as 
of today.
File permissions are being developed as we speak.
http://issues.apache.org/jira/browse/HADOOP-1298
You can also activate Trash as a protection for accidental file removals.
http://lucene.apache.org/hadoop/api/org/apache/hadoop/fs/Trash.html
https://issues.apache.org/jira/browse/HADOOP-432

Regards,
Konstantin

Torsten Curdt wrote:

> Any thoughts on how to make files in hdfs read-only? We would like to  
> protect some files.
> How could that be implemented?
>
> cheers
> -- 
> Torsten
>