I'm trying to figure out what's specific about RS_EPHEMERAL and RS_TEMPORARY slot kinds. The following comment (see definition of the ReplicationSlotPersistency enumeration) tells when each kind is dropped
* Slots marked as PERSISTENT are crash-safe and will not be dropped when * released. Slots marked as EPHEMERAL will be dropped when released or after * restarts. Slots marked TEMPORARY will be dropped at the end of a session * or on error. ... typedef enum ReplicationSlotPersistency However I don't see the actual difference: whenever ReplicationSlotCleanup() is called (on error or session end), ReplicationSlotRelease() has already been called too. And as for server restart, I see that RestoreSlotFromDisk() discards both EPHEMERAL and TEMPORARY. Do we really need both of them? -- Antonin Houska Web: https://www.cybertec-postgresql.com
