Re: SSI patch version 14

"Kevin Grittner"  wrote:
> So now that I'm sure we actually do need code there, I'll add it.
In working on this I noticed the apparent need to move two calls to
PredicateLockTuple a little bit to keep them inside the buffer lock. 
Without at least a share lock on the buffer, it seems that here is a
window where a read could miss the MVCC from a write and the write
could fail to see the predicate lock.  Please see whether this seems
reasonable:
http://git.postgresql.org/gitweb?p=users/kgrittn/postgres.git;a=commitdiff;h=7841a22648c3f4ae46f674d7cf4a7c2673cf9ed2
> And I'll add the new test to the isolation suite.
We don't need all permutations for this test, which is a good thing
since it has such a long setup time.  Is there an easy way to just
run the one schedule of statements on three connections?
-Kevin