Be sure to release the lock on failure to launch logical replication worker.

MasaoFujii · MasaoFujii · commit dc82f5a6406d · 2017-01-24T12:41:09.000+09:00
Petr Jelinek
diff --git a/src/backend/replication/logical/launcher.c b/src/backend/replication/logical/launcher.c
@@ -261,6 +261,7 @@ logicalrep_worker_launch(Oid dbid, Oid subid, const char *subname, Oid userid)
 	/* Bail if not found */
 	if (worker == NULL)
 	{
+		LWLockRelease(LogicalRepWorkerLock);
 		ereport(WARNING,
 				(errcode(ERRCODE_CONFIGURATION_LIMIT_EXCEEDED),
 				 errmsg("out of logical replication workers slots"),

Original file line number	Diff line number	Diff line change
`@@ -261,6 +261,7 @@ logicalrep_worker_launch(Oid dbid, Oid subid, const char *subname, Oid userid)`
`261`	`261`	`/* Bail if not found */`
`262`	`262`	`if (worker == NULL)`
`263`	`263`	`{`
	`264`	`+ LWLockRelease(LogicalRepWorkerLock);`
`264`	`265`	`ereport(WARNING,`
`265`	`266`	`(errcode(ERRCODE_CONFIGURATION_LIMIT_EXCEEDED),`
`266`	`267`	`errmsg("out of logical replication workers slots"),`