fix client retry create proxy lead to OOM (#4109)

vio-lin · beiwei30 · commit 13e876e40caa · 2019-05-23T16:09:04.000+08:00
diff --git a/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ReferenceConfig.java b/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ReferenceConfig.java
@@ -356,6 +356,7 @@ private T createProxy(Map<String, String> map) {
                 logger.info("Using injvm service " + interfaceClass.getName());
             }
         } else {
+            urls.clear(); // reference retry init will add url to urls, lead to OOM
             if (url != null && url.length() > 0) { // user specified URL, could be peer-to-peer address, or register center's address.
                 String[] us = SEMICOLON_SPLIT_PATTERN.split(url);
                 if (us != null && us.length > 0) {

Original file line number	Diff line number	Diff line change
`@@ -356,6 +356,7 @@ private T createProxy(Map<String, String> map) {`
`356`	`356`	`logger.info("Using injvm service " + interfaceClass.getName());`
`357`	`357`	`}`
`358`	`358`	`} else {`
	`359`	`+ urls.clear(); // reference retry init will add url to urls, lead to OOM`
`359`	`360`	`if (url != null && url.length() > 0) { // user specified URL, could be peer-to-peer address, or register center's address.`
`360`	`361`	`String[] us = SEMICOLON_SPLIT_PATTERN.split(url);`
`361`	`362`	`if (us != null && us.length > 0) {`