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Displaying posts with tag: usability (reset)
MySQL Sandbox 3.0.30 - now adapted to work with 5.5.30 and 5.6.10

The latest releases of MySQL Sandbox, in addition to deal with minor bugs, have mostly been necessary because of compatibility issues in MySQL, both 5.5 and 5.6.

When I found that MySQL 5.6 has some InnoDB tables inside the 'mysql' schema, I had to change the way that the sandbox used to remove all contents (the ./clear command.)

To achieve a smooth clean up, MySQL Sandbox now performs a dump of the mysql schema, and uses that saved data to restore the schema after a complete wipeout.

Unfortunately, when 5.5.30 was released, this operation resulted in a warning, due to a behavioral change.

After a careful change, and about 1200 unit tests, the latest version of …

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MySQL and warnings - Yet another compatibility break

The MySQL team seems to have a very peculiar idea about defaults and compatibility. Recently, I wrote about an annoying warning that cannot be removed. And previously, I noticed that MySQL 5.6 mixes warnings, info lines and errors in the same bunch of excessive chattiness.

With MySQL 5.5.30 came another headache. When I run a mysqldump of the 'mysql' schema, I get this warning:

$. mysqldump mysql > m.sql
-- Warning: Skipping the data of table mysql.event. Specify the --events option explicitly.

OK. No big deal. What if I tell the little troublemaker that I DON'T WANT the events table?

$ mysqldump --skip-events mysql > m.sql
-- Warning: Skipping the data of table …
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Google Docs sharing and its cloudy usability

Background: SkySQL is a distributed company. Nearly all of us work from home. To be productive, we need to emulate the best aspects of collaborating as if we were working next to one another. Given that nearly all of us had worked under similar distributed conditions at MySQL AB, we knew what we were getting into when we were founded. Obviously, we wanted to learn from our past experiences when making our choices for tools and processes.

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MySQL 5.6 too verbose when creating data directory

When I install a MySQL package using MySQL Sandbox, if everything goes smoothly, I get an informative message on standard output, and I keep working.

This is OK


$HOME/opt/mysql/5.5.15/scripts/mysql_install_db --no-defaults \
--user=$USER --basedir=$HOME/opt/mysql/5.5.15 \
--datadir=$HOME/sandboxes/msb_5_5_15/data \
--lower_case_table_names=2
Installing MySQL system tables...
OK
Filling help tables...
OK

To start mysqld at boot time you have to copy
support-files/mysql.server to the right place for your system

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:

/Users/gmax/opt/mysql/5.5.15/bin/mysqladmin -u root password 'new-password'
/Users/gmax/opt/mysql/5.5.15/bin/mysqladmin -u root -h gmac4.local password 'new-password'

Alternatively you can run: …
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Tungsten 2.0.5 with more power and ease of use

Tungsten Replicator 2.0.5 was released this week-end. The release notes have quite a long list of bug fixes. Thanks to all the ones who have submitted bug reports, and fixes! There are a couple of new features as well. The replicator includes now a slave prefetch service. Unlike parallel replication, this feature works fine with a single database, and provides performance improvements that in many cases solve the slave lagging problems. This was a bitch of a feature to get right. Many have tried it, many have experienced various degrees of success, and several failures. We started with the bold assertiveness of the brave after an exciting talk at Percona Live in October, and I was …

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Testing new builds with MySQL-Sandbox 3.0.24

MySQL::Sandbox 3.0.24 was released yesterday, with many new features. More than vanilla MySQLIf you have missed my previous announcement, here's the gist of it. MySQL Sandbox can now deal with tarballs from either Percona Server or MariaDB. The main difference after this change is that you can now create a directory called <PREFIX>5.5.16 and make_sandbox will recognize it as well as the plain 5.5.16.

$ make_sandbox --export_binaries --add_prefix=ps \
Percona-Server-5.5.11-rel20.2-114.Darwin.i386.tar.gz \
-- --sandbox_directory=msb_ps5_5_11

unpacking Percona-Server-5.5.11-rel20.2-114.Darwin.i386.tar.gz
[…]
installing with the following …
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Upgrading Tungsten Replicator: as easy as ...

When I talked about the usability improvements of Tungsten Replicator, I did not mention the procedure for upgrading. I was reminded about it by a question in the TR mailing list, and since the question was very relevant, I updated the Tungsten Cookbook with some quick upgrading instructions. A quick upgrading procedure is as important as the installer. Since we release software quite often, either because we have scheduled features to release or because of bug fixes, users want to apply a new release to an existing installation without much fuss. You can do the upgrade with a very quick and painless procedure. Let's suppose that you have installed one Tungsten Replicator cluster using this command:


#
# using tungsten-replicator 2.0.4
# …
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Usability improvements in Tungsten Replicator 2.0.4

If you love a software product, you should try to improve it, and not be afraid of criticizing it. This principle has guided me with MySQL (where I have submitted many usability bugs, and discussed interface with developers for years), and it proves true for Tungsten Replicator as well. When I started working at Continuent, while I was impressed by the technology, I found the installation procedure and the product logs quite discouraging. I would almost say disturbing. Fortunately, my colleagues have agreed on my usability focus, and we can enjoy some tangible improvements. I have already mentioned the new installation procedure, which requires just one command to install a full master/slave cluster. I would like to show how you can use the new installer to deploy a multiple source …

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Getting started with Tungsten Replicator and Tungsten Sandbox
We have been busy, at Continuent. In addition to our usual work with high performance replication, we have addressed usability issues, since we know that a hard-to-use problem, no matter how powerful, has low adoption. Thus, is with some personal satisfaction that I can announce the release of Tungsten Replicator 2.0.3, which comes with several huge improvements in matter of user friendliness. The new installation procedure is so user friendly, in fact, that I was able to build a sophisticated tungsten-sandbox with a 150-line shell script. (The corresponding features …
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Exchanging partitions with tables
While I was presenting my partitioning tutorial at the latest MySQL Conference, I announced a new feature that was, as far as I knew, still in the planning stage. Mattias Jonsson, one of the partitions developers, was in attendance, and corrected me, explaining that the feature was actually available in a prototype.


So, we can have a look at this improvement, which I am sure will make DBAs quite happy. The new feature is an instantaneous exchange between a partition and a table with the same structure. Using this feature, you can transfer the contents of one partition to one table, and vice versa. Since the transition is done only in the attribution of the data, there is no copy involved. The data …

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Showing entries 31 to 40 of 52
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