| From: | Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: 64-bit queryId? |
| Date: | 2017-09-30 07:18:05 |
| Message-ID: | CAB7nPqTcj=qxqX=-xOzgLdVofHy4TcRLsafbhwSgVvCFPDp5hQ@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Sat, Sep 30, 2017 at 1:34 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Robert Haas <robertmhaas(at)gmail(dot)com> writes:
>> How about widening the value to uint64?
>
> Doesn't really seem like that would guarantee no collisions.
This moves the possibility of a 25% collision from 50k queries 3.3
billion. Not zero, but safe enough as a minimal change for many years
to come.
--
Michael
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