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Partitioning without downtime
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* Partitioning without downtime
@ 2022-04-22 15:27  Loles <[email protected]>
  0 siblings, 1 reply; 3+ messages in thread

From: Loles @ 2022-04-22 15:27 UTC (permalink / raw)
  To: pgsql-admin

Hi!

Is there a way to partition a table in production without downtime? Or
extension that allows it.

Thanks!


^ permalink  raw  reply  [nested|flat] 3+ messages in thread

* Re: Partitioning without downtime
@ 2022-04-22 15:38  Keith Fiske <[email protected]>
  parent: Loles <[email protected]>
  0 siblings, 1 reply; 3+ messages in thread

From: Keith Fiske @ 2022-04-22 15:38 UTC (permalink / raw)
  To: Loles <[email protected]>; +Cc: pgsql-admin

On Fri, Apr 22, 2022 at 11:28 AM Loles <[email protected]> wrote:

> Hi!
>
> Is there a way to partition a table in production without downtime? Or
> extension that allows it.
>
> Thanks!
>

Zero downtime (or without a table lock at some point) is not possible with
native partitioning since you cannot convert an existing table into a
natively partitioned table. However, it is possible to do it with very
little downtime if the circumstances allow. I've laid out a method of doing
this with pg_partman here -
https://github.com/pgpartman/pg_partman/blob/master/doc/pg_partman_howto_native.md

-- 
Keith Fiske
Senior Database Engineer
Crunchy Data - http://crunchydata.com


^ permalink  raw  reply  [nested|flat] 3+ messages in thread

* Re: Partitioning without downtime
@ 2022-04-22 16:42  ravi k <[email protected]>
  parent: Keith Fiske <[email protected]>
  0 siblings, 0 replies; 3+ messages in thread

From: ravi k @ 2022-04-22 16:42 UTC (permalink / raw)
  To: Keith Fiske <[email protected]>; +Cc: Loles <[email protected]>; pgsql-admin

If you want update historical data while cutover it's difficult else you
can load historical data as chunks and then during switchover apply access
exclusive lock on table and load latest few hours data and rename table in
single  transaction.

Best,
Ravindra

On Fri, 22 Apr, 2022, 9:08 pm Keith Fiske, <[email protected]>
wrote:

>
>
> On Fri, Apr 22, 2022 at 11:28 AM Loles <[email protected]> wrote:
>
>> Hi!
>>
>> Is there a way to partition a table in production without downtime? Or
>> extension that allows it.
>>
>> Thanks!
>>
>
> Zero downtime (or without a table lock at some point) is not possible with
> native partitioning since you cannot convert an existing table into a
> natively partitioned table. However, it is possible to do it with very
> little downtime if the circumstances allow. I've laid out a method of doing
> this with pg_partman here -
> https://github.com/pgpartman/pg_partman/blob/master/doc/pg_partman_howto_native.md
>
> --
> Keith Fiske
> Senior Database Engineer
> Crunchy Data - http://crunchydata.com
>


^ permalink  raw  reply  [nested|flat] 3+ messages in thread

end of thread, other threads:[~2022-04-22 16:42 UTC | newest]

Thread overview: 3+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2022-04-22 15:27 Partitioning without downtime Loles <[email protected]>
2022-04-22 15:38 ` Keith Fiske <[email protected]>
2022-04-22 16:42   ` ravi k <[email protected]>

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