Re: PATCH: Batch/pipelining support for libpq

From: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
To: Zhihong Yu <zyu(at)yugabyte(dot)com>
Cc: Craig Ringer <craig(dot)ringer(at)enterprisedb(dot)com>, Matthieu Garrigues <matthieu(dot)garrigues(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: PATCH: Batch/pipelining support for libpq
Date: 2021-02-19 18:35:09
Message-ID: 20210219183509.GA4851@alvherre.pgsql
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Hello, thanks for looking at this patch.

On 2021-Feb-16, Zhihong Yu wrote:

> + if (querymode == QUERY_SIMPLE)
> + {
> + commandFailed(st, "startpipeline", "cannot use pipeline mode
> with the simple query protocol");
> + st->state = CSTATE_ABORTED;
> + return CSTATE_ABORTED;
>
> I wonder why the st->state is only assigned for this if block. The state is
> not set for other cases where CSTATE_ABORTED is returned.

Yeah, that's a simple oversight. We don't need to set st->state,
because the caller sets it to the value we return.

> Should PQ_PIPELINE_OFF be returned for the following case ?
>
> +PQpipelineStatus(const PGconn *conn)
> +{
> + if (!conn)
> + return false;

Yep.

Thanks

--
Álvaro Herrera 39°49'30"S 73°17'W

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