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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Is that possible to write a file system over Cassandra?
Date Thu, 15 Apr 2010 03:50:01 GMT
You forked Cassandra 0.5 for that?

That's... a strange way to do it.

On Wed, Apr 14, 2010 at 9:36 PM, Jeff Zhang <zjffdu@gmail.com> wrote:
> We are currently doing such things, and now we are still at the start stage.
> Currently we only plan to store small files. For large files, splitting to
> small blocks is really one of our options.
> You can check out from here http://code.google.com/p/cassandra-fs/
>
> Document for this project is lack now, but still welcome any feedback and
> contribution.
>
>
>
> On Wed, Apr 14, 2010 at 7:32 PM, Miguel Verde <miguelitovert@gmail.com>
> wrote:
>>
>> On Wed, Apr 14, 2010 at 9:26 PM, Avinash Lakshman
>> <avinash.lakshman@gmail.com> wrote:
>>>
>>> OPP is not required here. You would be better off using a Random
>>> partitioner because you want to get a random distribution of the metadata.
>>
>>
>> Not required, certainly.  However, it strikes me that 1 cluster is better
>> than 2, and most consumers of a filesystem would expect to be able to get an
>> ordered listing or tree of the metadata which is easy using the OPP row key
>> pattern listed previously.  You could still do this with the Random
>> partitioner using column names in rows to describe the structure but the
>> current compaction limitations could be an issue if a branch becomes too
>> large, and you'd still have a root row hotspot (at least in the schema which
>> comes to mind).
>
>
> --
> Best Regards
>
> Jeff Zhang
>

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