You you send us explain of that query. On Sun, Jul 11, 2010 at 6:31 PM, arijit bhattacharyya <new2mys...@gmail.com>wrote:
> optimize / analyze table in each of the hosts is not a good option for me , > this is an in-production set-up with minimal number of boxes in rotation . > > > > On Sun, Jul 11, 2010 at 5:57 PM, arijit bhattacharyya > <new2mys...@gmail.com>wrote: > > > > > Hi , i am running into trouble due to wrong index chosen by mysql in some > > particular type of queries . This is happening in a critical production > > environment where we have deployment in two different colocations . I am > > seeing that a paticular query is using one index in one set of hosts & > > another index in another set of hosts . We are not using 'use index' > clause > > to explicitly mention the index due to some limitations . But wondering > > based on what mysql is using different indexes in different hosts . This > is > > really surprising , since dataset & table structures are exactly same in > all > > the hosts . > > > > Other than changing the code to force using 'use index' , is there any > > other way to resolve it ? And what's the exact reason behind this ? Just > to > > have mysql choose the correct index always will simply solve my problem . > > > > Thanks . > > > -- Best Regards, Prabhat Kumar MySQL DBA Datavail-India Mumbai Mobile : 91-9987681929 www.datavail.com My Blog: http://adminlinux.blogspot.com My LinkedIn: http://www.linkedin.com/in/profileprabhat
