Horton

Re: Replication vs. float timestamps is a disaster

Jim Nasby <jim.nasby@bluetreble.com>

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From: Jim Nasby <Jim.Nasby@BlueTreble.com>
To: Andres Freund <andres@anarazel.de>, Petr Jelinek <petr.jelinek@2ndquadrant.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, Robert Haas <robertmhaas@gmail.com>, "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>
Date: 2017-02-22T06:10:35Z
Lists: pgsql-hackers 
On 2/20/17 5:04 AM, Andres Freund wrote:
> On 2017-02-20 11:58:12 +0100, Petr Jelinek wrote:
>> That being said, I did wonder myself if we should just deprecate float
>> timestamps as well.
>
> I think we need a proper deprecation period for that, given that the
> conversion away will be painful for pg_upgrade using people with big
> clusters.  So I think we should fix this regardless... :(

I wounder if a separate "floatstamp" data type might fit the bill there. 
It might not be completely seamless, but it would be binary compatible.
-- 
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com
855-TREBLE2 (855-873-2532)

Commits

  1. Consistently declare timestamp variables as TimestampTz.

  2. Remove now-dead code for !HAVE_INT64_TIMESTAMP.

  3. Remove pg_control's enableIntTimes field.

  4. De-support floating-point timestamps.

  5. Make integer_datetimes the default for MSVC even if not mentioned in config.pl.

  6. Enable 64-bit integer datetimes by default, per previous discussion.