Re: [HACKERS] Logical decoding on standby

On 19 March 2017 at 21:12, Craig Ringer <craig@2ndquadrant.com> wrote:

> Rebased attached.

Patch1 looks good to go. I'll correct a spelling mistake in the tap
test when I commit that later today.

Patch2 has a couple of points

2.1 Why does call to ReplicationSlotAcquire() move earlier in
pg_logical_slot_get_changes_guts()?

2.2 sendTimeLineIsHistoric looks incorrect, and at least isn't really
documented well.
The setting sendTimeLineIsHistoric = state->currTLI == ThisTimeLineID;
should be sendTimeLineIsHistoric = (state->currTLI != ThisTimeLineID);

but that doesn't cause failure because in read_local_xlog_page() we
say that we are reading from history when
state->currTLI != ThisTimeLineID explicitly rather than use
sendTimeLineIsHistoric

So it looks like we could do with a few extra comments
If you correct these I'll commit it tomorrow.

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