Re: [jgroups-users] GridFilesystem

Hi, Eugene.

If you are still interested in, you can see at my open source project -
distributed file storage. It support a master-slave replication via jgroups.

https://github.com/sherman/blobkeeper
On Dec 10, 2015 4:00 PM, "Questions/problems related to using JGroups" <
[email protected]> wrote:

Hi Eugene

On 10/12/15 01:46, Questions/problems related to using JGroups wrote:
> Hello,
>
> I need to build a cluster which would cache data, but not in memory but
> on the file system.
>
> I've found ReplCache, and thought I could follow the code as an example
> or make adjustments to store the data as files.

OK

> But l discovered that there is something like this already
> called GridFilesystem.
>
> I couldn't find any example of how to use it or any documentation, so
> first of all, I wanted to ask if my assumption is correct, and these
> classes are for the case I'm talking about?

No, GridFilesystem is about in-memory data only. It provides an java.io
abstraction to chunks of data stored in a cluster.


> And second question, I noticed that some comments says this is
> experimental feature, so how far the development moved? Could it be used
> on production with some monitoring, or this is not ready at all?

This was written to experiment with in-memory file systems, then copied
into Infinispan and further developed there. ReplCache is pretty stable,
as it doesn't contain any complex logic, and since GridFilesystem is
based on it, it should be quite stable, too.
However, this has never been given the same amount of attention as other
parts of JGroups which are heavily used in production.

> And any info about GridFilesystem or any example is greatly appreciated.
> I'm first time JGroups user, so any pointers or suggestions would be
> helpful.

There's an article Manik once wrote on the Infinispan version of GFS:
http://www.infoq.com/articles/infinispan-gridfs.

The Infinispan user's guide also has a section on it:
http://infinispan.org/docs/8.0.x/user_guide/user_guide.html#_grid_file_system

Hope this helps


> Thank you,
>
> Eugene


--
Bela Ban, JGroups lead (http://www.jgroups.org)


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