On Tue, Jul 03, 2018 at 01:51:48PM -0400, Alvaro Herrera wrote: > On 2018-Jul-03, Andres Freund wrote: >> Fair enough, but that's what a plain slot allows you as well, pretty >> fundamentally, no? The precise point at which recycling will be blocked >> will differer, sure.
ReplicationSlotsComputeRequiredLSN() is careful enough to discard slots which have their restart_lsn set to InvalidXLogRecPtr, so they are not accounted within the minimum LSN calculated for segment retention. Any fake value added by a user advancing a non-reserved slot is. At the end, are their any objections into fixing the issue and tightening the advancing API? -- Michael
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