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Re: The use of trails in svn_fs_base__commit_txn()

From: Greg Hudson <ghudson_at_MIT.EDU>
Date: 2006-01-11 16:03:29 CET

On Tue, 2006-01-10 at 16:46 -0600, Ben Collins-Sussman wrote:
> Yeah, rollback is 'hard' without real db transactions. Let's go shopping. :-)

My philosophy with FSFS was that Subversion transactions *are* the FSFS
equivalent of DB transactions. Giving them ACID properties is
redundant, since they are the mechanism by which the FSFS repository
itself gets ACID properties.

Of course, if you want to use Subversion FS transactions for some other
reason than ACID commits to the repository itself, the FSFS
implementation comes up short. You can't modify the same transaction
from two threads or processes at the same time, and you can't care too
much about their fate since a failed operation generally destroys them.

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Received on Wed Jan 11 16:05:32 2006

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