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Merge wal_level "archive" and "hot_standby" into new name "replica"

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The distinction between "archive" and "hot_standby" existed only because
at the time "hot_standby" was added, there was some uncertainty about
stability.  This is now a long time ago.  We would like to move forward
with simplifying the replication configuration, but this distinction is
in the way, because a primary server cannot tell (without asking a
standby or predicting the future) which one of these would be the
appropriate level.

Pick a new name for the combined setting to make it clearer that it
covers all (non-logical) backup and replication uses.  The old values
are still accepted but are converted internally.

Reviewed-by: Michael Paquier <michael.paquier@gmail.com>
Reviewed-by: David Steele <david@pgmasters.net>
This commit is contained in:
Peter Eisentraut
2016-02-29 20:01:54 -05:00
parent 4e1d2a1708
commit b555ed8102
17 changed files with 44 additions and 54 deletions
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2
src/backend/replication/slot.c
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@@ -760,7 +760,7 @@ CheckSlotRequirements(void)
(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
(errmsg("replication slots can only be used if max_replication_slots > 0"))));
if (wal_level < WAL_LEVEL_ARCHIVE)
if (wal_level < WAL_LEVEL_REPLICA)
ereport(ERROR,
(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
errmsg("replication slots can only be used if wal_level >= archive")));