Re: PostgreSQL logical replication depends on WAL segments?

Jeremy Finzel <finzelj@xxxxxxxxx> · Tue, 22 Jan 2019 21:26:06 -0600

On Tue, Jan 22, 2019 at 8:19 PM Achilleas Mantzios <achill@xxxxxxxxxxxxxxxxxxxxx> wrote:

    On 22/1/19 10:18 μ.μ., Jeremy Finzel
      wrote:

        On Tue, Jan 22, 2019 at 2:16 PM Jeremy Finzel
          <finzelj@xxxxxxxxx>
          wrote:

                    any one of those WAL files will not be archived
                      and recycled as long as it no longer needed by a
                      replication slot

          :(.  s/no longer/still.  I meant to say any one of those
            WAL files will not be archived and recycled as long as it
            still needed by a replication slot.

A WAL segment will be archived as soon as it is completed. https://www.postgresql.org/docs/11/continuous-archiving.html

Yep, you’re right. Let me try this again. It will be archived, but the segment won’t be reused or removed as long as the slot needs it. Is that an accurate statement?

Thanks,
Jeremy 