Comments on: Have you tested pt-online-schema-change? http://www.xaprb.com/blog/2012/05/22/have-you-tested-pt-online-schema-change/ Stay curious! Thu, 02 May 2013 12:36:53 +0000 hourly 1 http://wordpress.org/?v=3.5.1 By: seweryn http://www.xaprb.com/blog/2012/05/22/have-you-tested-pt-online-schema-change/#comment-20295 seweryn Sat, 29 Sep 2012 20:10:16 +0000 http://www.xaprb.com/blog/?p=2745#comment-20295 This is a great tool but if you use a lot of triggers … that you have a problem.

Could you place the code in the procedure and next re-create a trigger that already exists with “call” at the beginning ?

]]> By: Will Gunty http://www.xaprb.com/blog/2012/05/22/have-you-tested-pt-online-schema-change/#comment-20066 Will Gunty Fri, 25 May 2012 20:43:49 +0000 http://www.xaprb.com/blog/?p=2745#comment-20066 We’ve done a fair bit of testing this at box. On our largest table we ran it and did some “poor man checksums”. Basically a join where old.column = new.column and a count on that. Of over 100,000,000 rows tested (about 10% of the table), less than 100 were different. This we attributed to updates that had occurred since the change was made.

]]> By: Phil Chambers http://www.xaprb.com/blog/2012/05/22/have-you-tested-pt-online-schema-change/#comment-20064 Phil Chambers Wed, 23 May 2012 12:11:33 +0000 http://www.xaprb.com/blog/?p=2745#comment-20064 We started using it at Podio today, we’ll keep you posted.

]]> By: Rob Wultsch http://www.xaprb.com/blog/2012/05/22/have-you-tested-pt-online-schema-change/#comment-20063 Rob Wultsch Wed, 23 May 2012 03:44:47 +0000 http://www.xaprb.com/blog/?p=2745#comment-20063 I haven’t tested it but I am planning on ripping off a few features for FB OSC :)

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