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From "David W. Van Couvering" <David.Vancouver...@Sun.COM>
Subject Re: Upgrade testing
Date Sat, 18 Mar 2006 00:55:30 GMT
Thanks, Kathey.  I agree it's crucial to verify that changes you  make 
don't impact upgrade, and that this should be part of derbyall.  I think 
it's great Deepa is doing this work.

I will try to look at and review the patch, although this is not my area 
of expertise.

David

Kathey Marsden wrote:
> Rick Hillegas wrote:
> 
> 
>>Can someone point me at a primer which describes how developers test
>>soft and hard upgrade? There is some customer-oriented discussion of
>>upgrade in the Developer's Guide and on the Wiki (at
>>http://wiki.apache.org/db-derby/UpgradingTen). But I can't find any
>>pointers on the testing web page (java/testing/README.htm).
>>
> 
> Rick pinged me off-line and asked me to respond to this question about
> upgrade testing.
> 
> There are some upgrade tests checked into 
> java/testing/org/apache/derbyTesting/upgradeTests. There is a script
> there that you can run easily but it is not integrated into the test
> suite or in the README.  Doing this integration has been a long open
> issue:  DERBY-514.   Until recently it has apparently been nobody's itch
> to pick this item up.  Deepa recently started working on it and found 
> many diffs that have yet to be fully analyzed. Most problems seem
> related to the metadata based on the product regressions she has filed
> so far (DERBY-1124) (DERBY-1120) .  I also filed (DERBY-1107)  an
> existing  problem related to changing metadata in maintenance versions. 
> All three issues seem related to how to handle changes to the metadata
> queries.
> 
> This is really the first significant feature  release of  Derby after
> the initial release, so really the first time ever we have to deal with
> upgrade and compatibility,  how it works in practice or how it is
> tested.   I think that is a collective and fairly urgent itch that needs
> to be scratched.   I think Deepa's proposal in DERBY-1076 was good, that
> we first focus on getting the  test running in the harness and then it
> will be easier for everyone to run and analyze.  I think I would add
> that we should hold off on metadata checkins and other changes that 
> impact upgrade until  the upgrade  test is  working to a point that it
> can test for regressions and be updated to test new features.   Please
> review Deepa's patch for DERBY-1075 to help move this effort along.
> 
> Thanks
> 
> Kathey
> 
> 

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