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Cleanup slots during drop database

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Automatically drop all logical replication slots associated with a
database when the database is dropped. Previously we threw an ERROR
if a slot existed. Now we throw ERROR only if a slot is active in
the database being dropped.

Craig Ringer
This commit is contained in:
Simon Riggs
2017-03-28 10:05:21 -04:00
parent 4d33a7f2e7
commit ff539da316
7 changed files with 182 additions and 14 deletions
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3
doc/src/sgml/func.sgml
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@ -18876,7 +18876,8 @@ postgres=# SELECT * FROM pg_walfile_name_offset(pg_stop_backup());
<entry>
Drops the physical or logical replication slot
named <parameter>slot_name</parameter>. Same as replication protocol
command <literal>DROP_REPLICATION_SLOT</>.
command <literal>DROP_REPLICATION_SLOT</>. For logical slots, this must
be called when connected to the same database the slot was created on.
</entry>
</row>

2
doc/src/sgml/protocol.sgml
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@ -2034,6 +2034,8 @@ The commands accepted in walsender mode are:
<para>
Drops a replication slot, freeing any reserved server-side resources. If
the slot is currently in use by an active connection, this command fails.
If the slot is a logical slot that was created in a database other than
the database the walsender is connected to, this command fails.
</para>
<variablelist>
<varlistentry>