Re: unlogged tables

On Sat, Dec 18, 2010 at 12:27 PM, Kevin Grittner
<Kevin.Grittner@wicourts.gov> wrote:
> Robert Haas  wrote:
>
>> If there's any third-party code out there that is checking
>> rd_istemp, it likely also needs to be revised to check whether
>> WAL-logging is needed, not whether the relation is temp. The way
>> I've coded it, such code will fail to compile, and can be very
>> easily fixed by substituting a call to RelationNeedsWAL() or
>> RelationUsesLocalBuffers() or RelationUsesTempNamespace(),
>> depending on which property the caller actually cares about.
>
> Hmm...  This broke the SSI patch, which was using rd_istemp to omit
> conflict checking where it was set to true.  The property I care
> about is whether tuples in one backend can be read by an transaction
> in a different backend, which I assumed would not be true for
> temporary tables.  Which of the above would be appropriate for that
> use?

RelationUsesLocalBuffers().

--
Robert Haas
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