Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Plain View
MapReduce >> mail # user >> Re: How to add another file system in Hadoop


Copy link to this message
-
Re: How to add another file system in Hadoop
Hi  Agarwal,
   This repository and the corresponding README file may give you some hint
for the configuration.

   https://github.com/gluster/hadoop-glusterfs

yours,
Kun Ling
On Thu, Feb 21, 2013 at 9:14 PM, Ling Kun <[EMAIL PROTECTED]> wrote:

> Hi  Agarwal,
>    This repository and the corresponding README file may give you some
> hint for the configuration.
>
>    https://github.com/gluster/hadoop-glusterfs
>
> yours,
> Kun Ling
>
>
>
> On Thu, Feb 21, 2013 at 8:53 PM, Harsh J <[EMAIL PROTECTED]> wrote:
>
>> What Hemanth points to (fs.TYPE.impl, i.e. fs.cdmi.impl being set to
>> the classname of the custom FS impl.) is correct for the 1.x releases.
>> In 2.x and ahead, the class for a URI is auto-discovered from the
>> classpath (a 'service'). So as long as your jar is present on the
>> user's runtime, the FS class implementing cdmi:// will get loaded and
>> work without requiring a config injection globally like 1.x did.
>>
>> On Thu, Feb 21, 2013 at 6:19 PM, Hemanth Yamijala
>> <[EMAIL PROTECTED]> wrote:
>> > I may be guessing here a bit. Basically a filesystem is identified by
>> the
>> > protocol part of the URI of a file - so a file on the S3 filesystem will
>> > have a URI like s3://... If you look at the core-default.xml file in
>> Hadoop
>> > source, you will see configuration keys like fs.<fs-type>.impl and the
>> value
>> > is a class that implements that type of filesystem. So, you'd basically
>> have
>> > to define a cdmi:// type protocol and define a fs.cdmi.impl key in your
>> > Hadoop configuration.
>> >
>> > Thanks
>> > hemanth
>> >
>> >
>> > On Thu, Feb 21, 2013 at 4:18 PM, Agarwal, Nikhil <
>> [EMAIL PROTECTED]>
>> > wrote:
>> >>
>> >> Hi,
>> >>
>> >>
>> >>
>> >> I am planning to add a file system called CDMI under
>> org.apache.hadoop.fs
>> >> in Hadoop, something similar to KFS or S3 which are already there under
>> >> org.apache.hadoop.fs. I wanted to ask that say, I write my file system
>> for
>> >> CDMI and add the package under fs but then how do I tell the
>> core-site.xml
>> >> or other configuration files to use CDMI file system. Where all do I
>> need to
>> >> make changes to enable CDMI file system become a part of Hadoop ?
>> >>
>> >>
>> >>
>> >> Thanks a lot in advance.
>> >>
>> >>
>> >>
>> >> Regards,
>> >>
>> >> Nikhil
>> >
>> >
>>
>>
>>
>> --
>> Harsh J
>>
>
>
>
> --
> http://www.lingcc.com
>
> --
> http://www.lingcc.com <http://www.lingcc.com>
>
+
Agarwal, Nikhil 2013-02-22, 05:05
+
Ling Kun 2013-02-22, 07:56
+
Ling Kun 2013-02-22, 07:55