Re: A thought on Index Organized Tables

Gokulakannan Somasundaram wrote:
>> The replay of the heap insert/update/delete record updates the
>> visibility map.
>>
> So are you planning to make that section, which writes the xlog and updates
> the visibility map inside a PANIC section right?

The xlog record is already written in a critical section. Yeah, perhaps
the critical section needs to be extended to cover the visibility map
updates. The indexes haven't been changed at that point yet, so an
index-only scan still produces the right result, but a subsequent update
would fail to update the visibility map because the flag on the heap
page was already cleared.

--  Heikki Linnakangas EnterpriseDB   http://www.enterprisedb.com