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From Mike Matrigali <mikem_...@sbcglobal.net>
Subject Re: [jira] Created: (DERBY-1068) change of store contract: online compress operations should not share any locks with user transactions
Date Tue, 28 Feb 2006 19:31:22 GMT
Andreas, are you going to propose a patch for this or would you like
me to take the first take on it?

Andreas Korneliussen (JIRA) wrote:
> change of store contract: online compress operations should not share any locks with
user transactions
> ------------------------------------------------------------------------------------------------------
> 
>          Key: DERBY-1068
>          URL: http://issues.apache.org/jira/browse/DERBY-1068
>      Project: Derby
>         Type: Improvement
>   Components: Store  
>     Reporter: Andreas Korneliussen
>     Priority: Minor
> 
> 
> Propose to add the following to the store contract:
> * truncate and compress requires exclusive table locking
> * the truncate, purge and compress operations do not share any locks with user transactions

> 
> Currently the store implementation allows users to share locks in truncate and possibly
purge.
> 
> This request is driven by:
> http://www.nabble.com/conflict-detection-strategies-t1120376.html#a2938142
> 
> and:
> 
> http://www.nabble.com/RowLocation-contract-from-storage-engine-t1142235.html#a2994156
> 


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