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Re: Update on the status of Mckoi SQL



Hi Toby,

I'm very happy to hear that the development is making progress.

There is one aspect that I would like to mention. The current Mckoi implementation seems to keep lots of files open, and in large deployments, it causes the JVM to fail with a "too many open files" error. My database uses about 250 tables, and I create a separate database instance for each customer in hosted mode. This seems to imply (I'm guessing here) that Mckoi opens n*250 files when there are n instances, and that causes problems with the JVM. This is unfortunately a show-stopper for me.

I am hoping that you will have addressed this problem with the new version.

Mckoi has proven to be an extremely reliable, easy-to-use piece of software. Thanks for the great work.

Best regards.
 
M. A. Sridhar
m_a_sridhar at yahoo dot com


----- Original Message ----
From: Tobias Downer <toby@mckoi.com>
To: mckoidb@mckoi.com
Sent: Thursday, December 14, 2006 5:57:52 PM
Subject: Re: Update on the status of Mckoi SQL

Hi Antonello,

Unfortunately I have to ask for a little more patience from you and the
community on the next release of Mckoi.  I was hoping I'd have the code
to give out by now, but adding the new features we wanted in this
release has been a huge undertaking.

The reason for the lengthy overhaul of the code was the introduction of
a new 64 bit data storage system which I intend will be the final
revision of the data storage system in Mckoi.  The new data store system
is a complete rewrite and wraps all the low level database storage/query
functionality into a simple interface which leads to many elegant ways
to implement the higher level database functions.  What this means is
the next version of Mckoi will be able to scale up to massive data sets
and will have a very flexible index and list management function.

The data store code is finished.  The reason why the release hasn't
happened sooner is because the change has not turned out to be an
incremental revision of the codebase.  Most of the code that involves
managing data and indexes has needed to be updated or rewritten and many
of the higher level data management code has been effected in some way
from the changes.

The code is slowly coming together and there will be a new release soon
and it will be considerably more advanced than the current release.  I
hope the quality of the code will speak for itself when it's done.

Toby.

Antonello Provenzano wrote:
> Hi all,
>
> I'm curious about the current status of the project: in a post dated
> 26th October 2005 Tobias announced the project was still alive and
> near to a new release.
> Since then nothing happened and many users continuously comply about
> the death of the project (that Tobias has always denied), trying to
> find an alternative.
>
> Industrially a stable project that doesn't change large portions of
> its code is a good choice, but the lack of improvements, bug fixing or
> new features is a bad signal for the 'market'.
>
> Hope this post was not bothering anyone and will find a concrete response.
>
> Cheers.
> Antonello


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