Comments on: Trying to reliably make MyISAM crash; Maria is sturdy as

By: Oleksandr Byelkin

Oleksandr Byelkin — Wed, 30 Jan 2008 07:22:04 +0000

Logs are huge by default (1Gb per file) but you can limit how much data write in every log file:

set global maria_log_file_size=

Maria by default remove unneeded logs as soon as it detected (checked on every checkpoint, by default every 30 sec)

By: byte

byte — Wed, 30 Jan 2008 03:10:22 +0000

Aha! So thats how you did it in Heidelberg. Giuseppe and I didn’t have enough time to chat with you to see what was going on, and I was in awe when I first saw it in Heidelberg :)

Kudos BTW to all work on Maria - it seems really reliable, and its crash-safe goodness, is simply amazing.

Highly excited I am, so I’ll be playing with it a lot more and providing feedback

By: Sergei Golubchik

Sergei Golubchik — Tue, 29 Jan 2008 23:41:24 +0000

I think you had problems crashing MySQL because when insert … select uses the same table both in insert and select clauses, MySQL first executes select into a temporary table, and then insert from it into the destination table. That is, half of the time MySQL is NOT writing into t1, and you have no chance of seeing when it does, you shoot in the dark, pull the plug, and pray.

A better approach would be to create a big table in advance, and use insert t1 select * from big_table; or load data infile.

In Heidelberg we pulled the plug during the large DELETE and MyISAM was corrupted, pretty reliably.

By: Thoughts on Maria and SSD « Kevin Burton’s NEW FeedBlog

Thoughts on Maria and SSD « Kevin Burton’s NEW FeedBlog — Tue, 29 Jan 2008 08:14:12 +0000

[...] 29, 2008 in mysql A lot of people have been buzzing about Maria over the last few [...]