Ian Barwick daa7de1cd0 standby follow: don't attempt to delete slot if new upstream is same as current ...

An attempt will be made to delete an existing replication slot on the
old upstream node (this is important during e.g. a switchover operation
or when attaching a cascaded standby to a new upstream). However if the
standby is currently attached to the follow target node anyway, the
replication slot should never be deleted.

2019-12-10 15:58:45 +09:00

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