| From: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
|---|---|
| To: | Heikki Linnakangas <hlinnakangas(at)vmware(dot)com> |
| Cc: | Andres Freund <andres(at)2ndquadrant(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: What exactly is our CRC algorithm? |
| Date: | 2014-11-07 05:08:04 |
| Message-ID: | CAA4eK1J90AzCJPsG9vP-AP0Jjvbrd3-gRGcY33CCPoxdOyK6mw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Tue, Nov 4, 2014 at 3:17 PM, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>
wrote:
> On 10/27/2014 06:02 PM, Heikki Linnakangas wrote:
>
>> I came up with the attached patches. They do three things:
>>
>> 1. Get rid of the 64-bit CRC code. It's not used for anything, and
>> haven't been for years, so it doesn't seem worth spending any effort to
>> fix them.
>>
>> 2. Switch to CRC-32C (Castagnoli) for WAL and other places that don't
>> need to remain compatible across major versions.
>>
>>
Will this change allow database created before this commit to be
started after this commit?
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com
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