Horton

Re: Pipeline mode and PQpipelineSync()

Alvaro Herrera <alvaro.herrera@2ndquadrant.com>

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From: Alvaro Herrera <alvaro.herrera@2ndquadrant.com>
To: Boris Kolpackov <boris@codesynthesis.com>
Cc: pgsql-hackers@lists.postgresql.org
Date: 2021-07-06T14:58:42Z
Lists: pgsql-hackers 
On 2021-Jul-06, Boris Kolpackov wrote:

> Alvaro Herrera <alvaro.herrera@2ndquadrant.com> writes:
> 
> > Ah, yes it does.  I can reproduce this now.  I thought PQconsumeInput
> > was sufficient, but it's not: you have to have the PQgetResult in there
> > too.  Looking ...
> 
> Any progress on fixing this?

Yeah ... the problem as I understand it is that the state transition in
libpq when the connection is in pipeline aborted state is bogus.  I'll
post a patch in a bit.

-- 
Álvaro Herrera              Valdivia, Chile  —  https://www.EnterpriseDB.com/
#error "Operator lives in the wrong universe"
  ("Use of cookies in real-time system development", M. Gleixner, M. Mc Guire)

Commits

  1. libpq: Fix sending queries in pipeline aborted state

  2. Fix libpq state machine in pipeline mode

  3. Add PQsendFlushRequest to libpq