Hi Frederico & Yoku,

Thanks for your responses!  Also, I had a question regarding the environment in which you've been using compression- are they virtualized instances or bare metal? Our db instances are m1.xlarge aws ec2 instances (4 vcpu + 15G mem) and this is somewhat an unknown for us which is why we're only moving some tables to compressed to try out- I'm just trying to read up and find out as much as I can about compression and any pitfalls as I can so that I can be better prepared- I am aware of the basic concepts that it's more cpu intensive, but most of the material I've found states that they're running on fusionio etc...so any insight/reading into running on virtualized instances would help greatly

Jan,

We do have innodb_file_per_table set to 1. About your question - as I've mentioned we've never used compression or barracuda before so we want to tread lightly. Also considering that Antelope is the default file format, I assumed that it was (possibly) stable/preferrable. Do you know if this is the case?

Thanks,

Rohan

On Wed, Oct 29, 2014 at 2:14 AM, yoku ts. <yoku0825@gmail.com> wrote:

Setting innodb_file_format Barracuda needs innodb_file_per_table.

So, your (new created) Barracuda table is putted into one .ibd file.

Any other your Antelope tables (in other .ibd files or ibdata1) don't be affected that operation.

I have mix of Antelope/Barracuda for years in our production environment too, without any problem of that.

Regards,

2014-10-29 17:35 GMT+09:00 Federico Razzoli <federico_raz@yahoo.it>:

I had a mix of Antelope/Barracuda for years. As far as I can tell, this never caused problems.

Regards
Federico


--------------------------------------------
Mer 29/10/14, Rohan M C <rohanmc@gmail.com> ha scritto:

 Oggetto: [Maria-discuss] question regarding innodb compression
 A: maria-discuss@lists.launchpad.net
 Data: Mercoledì 29 ottobre 2014, 08:36

 Hi
 all,
 Due to space constraints we are considering the
 innodb compression option for some of our larger tables.
 We're not compressing all the tables, but only a select
 few to begin with. Our current planned process for this is
 to SET GLOBAL innodb_file_format=Barracuda;
 create compressed table, transfer data,  and switch
 innodb_file_format back to Antelope.
 My question is around having this mix of table
 file formats in the same database. I've tried test
 queries and they were fine, but is it ok to have a mix of
 both Antelope and Barracuda file format tables in the db for
 a production environment?
 Thanks,Rohan

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