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From Myrna van Lunteren <m.v.lunte...@gmail.com>
Subject Re: Question regarding predicatesIntoViews test failure in Derby 10.1 branch version 201931
Date Wed, 29 Jun 2005 14:03:51 GMT
Hi John,
 We've been seeing an intermittent failure with this test with some of the 
jvms we run against on a slow machine.
It appears the test is not 'tight' enough to always pass on slower machines 
- sometimes one of the queries results in a table scan, sometimes an index 
I can't right now remember if there is a JIRA_CASE for it. If not, it 
wouldn't harm. 
 There was a bug filed at one point for the summary calculation being wrong, 
but it looks like it was not fixed entirely - I think I saw that the 
sub-suites seem to get it right, but derbyall doesn't?
I wanted to check into this, but never got around to it. A new bug would be 
good as a reminder...

 On 6/28/05, sissonj@insession.com <sissonj@insession.com> wrote: 
> I am running on a test build of a JVM (not a formal JVM release) and I 
> would like to get someone's opinion as to whether this test failure is due 
> to a bug in the JVM. 
> Can Derby's behaviour (e.g. optimizations etc) differ based upon the speed 
> of the machine it is running on (therefore affecting test output), or will 
> it always operate identically, no matter the hardware? The reason I ask is 
> that I ran the tests at a low priority on a busy system. 
> I also noticed that the test report said 0% fail even though one test 
> failed. 
> Let me know if you want JIRA issues raised. 
> All derbylang tests passed on Windows XP. 
> Thanks, 
> John 

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