On 2/5/23 19:36, Andrey Borodin wrote:
> On Fri, Jan 6, 2023 at 10:02 PM Andrey Borodin <amborodin86@gmail.com> wrote:
>>
>> Hello! Please find attached v8.
>
> I got some interesting feedback from some patch users.
> There was an oversight that frequently yielded results that are 1,2 or
> 3 bytes longer than expected.
> Looking closer I found that the correctness of the last 3-byte tail is
> checked in two places. PFA fix for this. Previously compressed data
> was correct, however in some cases few bytes longer than the result of
> current pglz implementation.
>
Thanks. What were the consequences of the issue? Lower compression
ratio, or did we then fail to decompress the data (or would current pglz
implementation fail to decompress it)?
regards
--
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
