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From Jukka Zitting <jukka.zitt...@gmail.com>
Subject Re: When optimistic locking fails
Date Fri, 08 Mar 2013 11:19:13 GMT

On Fri, Mar 8, 2013 at 12:54 PM, Michael Marth <mmarth@adobe.com> wrote:
> you saw this problem for SegmentMK which uses branch-merge extensively

The problem affects the SegmentMK only when it's *not* using multiple
journals to distribute writes.

> but is this not a problem all distributed MK implementations will run into?

To some degree, yes. But for example with the new MongoMK the locked
areas are much more fine-grained (individual nodes) than with the
SegmentMK (the entrie tree), so it isn't an issue except in cases
where lots of concurrent writes modify the same nodes.


Jukka Zitting

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