[mythtv-commits] Ticket #8819: Scheduler Optimization

MythTV mythtv at cvs.mythtv.org
Tue Aug 24 15:14:25 UTC 2010

#8819: Scheduler Optimization
 Reporter:  kormoc               |           Owner:  gigem     
     Type:  patch                |          Status:  new       
 Priority:  trivial              |       Milestone:  unknown   
Component:  MythTV - Scheduling  |         Version:  Trunk Head
 Severity:  low                  |      Resolution:            
 Keywords:                       |   Ticket locked:  0         

Comment (by gigem):

 I believe this patch has a very high degree of causing subtle breakage in
 the scheduler. The scheduler has used SELECT DISTINCT since before I
 started mucking with it and is full of assumptions that every returned row
 is unique. The only way to safely switch to GROUP BY is to thoroughly
 check the usage of every column returned in the query. At a minimum,
 recordid, manualid and probably oldrecduplicate, recduplicate and
 findduplicate would need to be included in any GROUP BY clause.

Ticket URL: <http://svn.mythtv.org/trac/ticket/8819#comment:1>
MythTV <http://www.mythtv.org/>

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