On Thu, Jun 11, 2015 at 12:14 PM, Bruce Momjian <bruce@momjian.us> wrote:
> On Thu, Jun 11, 2015 at 12:13:26PM -0400, Robert Haas wrote:
>> On Thu, Jun 11, 2015 at 11:32 AM, Bruce Momjian <bruce@momjian.us> wrote:
>> > Improve hash creation and lookup performance (Tomas Vondra,
>> > Teodor Sigaev, Tom Lane, Robert Haas)
>>
>> I suggest haveing two separate items. One of those is about the Hash
>> executor node and the other is about our dynahash stuff. So they're
>> completely different code bases.
>
> OK, can you give me some text? Do users really care which part it is
> in?
One item should say something like:
Improve hash join performance.
The Teodor/Tom thing should say something like:
Improve the performance of various in-memory hash tables. In
particular, this can improve the performance of bitmap index scans.
I assume users would view those as separate things.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
