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Add a WAIT option to DROP_REPLICATION_SLOT

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Commit 9915de6c1c changed the default behavior of
DROP_REPLICATION_SLOT so that it would wait until any session holding
the slot active would release it, instead of raising an error.  But
users are already depending on the original behavior, so revert to it by
default and add a WAIT option to invoke the new behavior.

Per complaint from Simone Gotti, in
Discussion: https://postgr.es/m/CAEvsy6Wgdf90O6pUvg2wSVXL2omH5OPC-38OD4Zzgk-FXavj3Q@mail.gmail.com
This commit is contained in:
Alvaro Herrera
2017-09-01 13:44:14 +02:00
parent abe85ef1d0
commit be7161566d
8 changed files with 30 additions and 7 deletions
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src/backend/replication/repl_scanner.l
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@@ -103,6 +103,7 @@ TEMPORARY { return K_TEMPORARY; }
EXPORT_SNAPSHOT { return K_EXPORT_SNAPSHOT; }
NOEXPORT_SNAPSHOT { return K_NOEXPORT_SNAPSHOT; }
USE_SNAPSHOT { return K_USE_SNAPSHOT; }
WAIT { return K_WAIT; }
"," { return ','; }
";" { return ';'; }