MySQL Max Build Policy

Kaj Arnö · *nix forums beginner Joined: 21 Jul 2006 Posts: 1

Dear MySQL users,

Starting MySQL 5.1 (1), we’re simplifying life when it comes to the
number of builds for each platform. We will be building only one binary
package for each platform (2): the binary known in MySQL 5.0 as “max”.
The assumption is that users prefer one binary with all options enabled,
rather than having to choose the proper version at install time (or
worse still, rely on others having made the proper choice on their behalf).

And with only one version, there is no need to call it “max”. “The max
version is dead. Long live the max version!“. Not to speak in riddles,
the standard mysqld binary is intended to contain all mysqld-max
features. While 5.1.11 e.g. in Linux (x86) package still has three binaries

mysql-5.1.11-beta-linux-i686/bin/mysqld
mysql-5.1.11-beta-linux-i686/bin/mysqld-debug
mysql-5.1.11-beta-linux-i686/bin/mysqld-max

the plan is to reduce this to two. Already now in 5.1, the only
difference between mysqld and mysqld-max is the BDB table handler. The
only real difference going forward is removing support of BDB, which is
the first step towards removing it also from the source after 5.1.

We think the majority of our users agree that the simplification is
beneficial. This way, MySQL will by default contain MySQL Cluster,
together with all other functionality we deem stable enough to provide
our user base with.

In MySQL 5.0 and earlier, the Standard/Max duality has proven
problematic from the user’s perspective:

- The question “Which package should I install?” is a very common one on
the mailing list.
- There is a limit to the number of flavours a user can decide between,
more flavours is just overwhelming.
- The risk of the user picking the wrong binary and then thinking “this
is not supported” is high.
- As we want customers to try new things, we should see to it that they
already have them installed.

I imagine the user asking himself or herself questions like

- Has my DBA installed the version I want and need?
- Are security functions (such as SSL) available in all binaries?
- Does the Debug version have the extra debug information on top of
Standard or on top of Max?
- Is MySQL Max somehow related to MaxDB? (Footnote: No, it is not)

I won’t hide the fact that our Build team also saves some time by not
providing multiple binaries: We get a shorter turnaround time for
builds, for tests and for uploads to mirrors. And it helps our
commercial Support team, which now needs to ask users to separate
between flavours for versions, and keep track of differences between
flavours.

However, our simplification is not as much about reducing our own build
complexity, as about simplifying life for our user base.

- Fewer choices means less time spent choosing, simpler lists on the Web.
- The user/developer is less dependent on which particular version he
has, when he uses/develops applications based on MySQL.
- The developer does not need to convince his DBA or ISP to upgrade into
a particular flavour of a release.
ISPs and DBAs don’t have to make complex decisions on which flavours to
support.
- Distributors will hopefully pick up our choice of configuration, to
further reduce the number of different MySQL configurations available
(and thereby the confusion).

Like with any decision, we don’t have all the facts at hand. So now is
the time to let us know if we’re on track or not. This can be done on
the forums at http://forums.mysql.com/list.php?3, or on the mailing
lists at http://lists.mysql.com/mysql or as comments to my blog on
http://www.planetmysql.org/kaj/?p=58

Footnotes:
(1) The MySQL 5.1 download pages at
http://dev.mysql.com/downloads/mysql/5.1.html say

As we’re working on making some changes to how we will provide binary
distributions of MySQL 5.1, this release currently only provides “Max”
binaries for a few selected platforms as well as the source distributions.

Compare this to the download pages for MySQL 5.0 Community Edition -
Generally Available (GA) Release at
http://dev.mysql.com/downloads/mysql/5.0.html where we say

The Standard binaries are recommended for most users

The Max version includes additional features that have not been
exhaustively tested or are not required for general usage. When these
features have matured and proven to be stable, they will be incorporated
into future releases of the Standard binaries. The Max version also, for
most platforms, contains MySQL Cluster storage node, management server
and mysqld/ndb enabling programs.

The Debug binaries have been compiled with extra debug information, and
are not intended for production use, because the included debugging code
may reduce performance.

(2) A separate server binary with additional debugging support enabled
continues to be included.

Kaj
--
Kaj Arnö <kaj@mysql.com>
MySQL AB, VP Community Relations

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