Re: Status of the startup process post end of recovery

From: Andres Freund <andres(at)2ndquadrant(dot)com>
To: Pavan Deolasee <pavan(dot)deolasee(at)gmail(dot)com>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Status of the startup process post end of recovery
Date: 2013-03-04 12:53:42
Message-ID: 20130304125342.GC3943@awork2.anarazel.de
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On 2013-03-04 18:21:50 +0530, Pavan Deolasee wrote:
> Hello,
>
> While doing some tests, I observed that the "ps" command continues to
> display status of the startup process as "recovering <filename>" even
> though it has finished the redo and is now performing end-of-recovery
> checkpoint. This checkpoint can take a while, a few seconds to a few
> minutes depending on the dirty buffers at the end of the recovery. The
> "ps" command keep displaying a stale status for all that time. How
> about calling set_ps_display() with appropriate status string, say
> similar to what is logged by LogCheckpointStart() ? If we do that,
> what would be the best place to add that code ? I was thinking adding
> that to CreateCheckpoint() itself so that the status is displayed at
> all relevant places.

That might be confusing for example in CREATE DATABASE.

Greetings,

Andres Freund

--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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