Merge pull request apache#332 from brandscreen/master

Wait until we're done connecting before returning from fillPool

AUTHORS

@@ -44,3 +44,4 @@ Ashwin Purohit <purohit@gmail.com>
 Dan Kinder <dkinder.is.me@gmail.com>
 Oliver Beattie <oliver@obeattie.com>
 Justin Corpron <justin@retailnext.com>
+Miles Delahunty <miles.delahunty@gmail.com>

connectionpool.go

@@ -227,6 +227,7 @@ func (c *SimplePool) fillPool() {
 	c.hostMu.RLock()
 
 	//Walk through list of defined hosts
+	var wg sync.WaitGroup
 	for host := range c.hosts {
 		addr := JoinHostPort(host, c.cfg.Port)
 
@@ -251,14 +252,19 @@ func (c *SimplePool) fillPool() {
 
 		//This is reached if the host is responsive and needs more connections
 		//Create connections for host synchronously to mitigate flooding the host.
+		wg.Add(1)
 		go func(a string, conns int) {
+			defer wg.Done()
 			for ; conns < c.cfg.NumConns; conns++ {
 				c.connect(a)
 			}
 		}(addr, numConns)
 	}
 
 	c.hostMu.RUnlock()
+
+	//Wait until we're finished connecting to each host before returning
+	wg.Wait()
 }
 
 // Should only be called if c.mu is locked