Re: [HACKERS] Interval for launching the table sync worker - Mailing list pgsql-hackers

From Peter Eisentraut
Subject Re: [HACKERS] Interval for launching the table sync worker
Date
Msg-id ccfcdae9-e41a-6ab0-8751-7baf6fcc32e9@2ndquadrant.com
Whole thread Raw
In response to Re: [HACKERS] Interval for launching the table sync worker  (Petr Jelinek <petr.jelinek@2ndquadrant.com>)
Responses Re: [HACKERS] Interval for launching the table sync worker
List pgsql-hackers
On 4/10/17 08:10, Petr Jelinek wrote:
> I don't think solution is quite this simple. This will cause all table
> sync workers to be delayed which means concurrency will suffer and the
> initial sync of all tables will take much longer especially if there is
> little data. We need a way to either detect if we are launching same
> worker that was already launched before, or alternatively if we are
> launching crashed worker and only then apply the delay.

Perhaps instead of a global last_start_time, we store a per relation
last_start_time in SubscriptionRelState?

-- 
Peter Eisentraut              http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services



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