Ensure clusterInfoMap does not become empty when external LB is given (…

…#25)

* Ensure clusterInfoMap does not become empty if host, in yb_servers() response, is same as public_ip
* Update version to 42.7.3-yb-2

gradle.properties

@@ -14,7 +14,7 @@ kotlin.code.style=official
 # This is version for PgJdbc itself
 # Note: it should not include "-SNAPSHOT" as it is automatically added by build.gradle.kts
 # Release version can be generated by using -Prelease or -Prc=<int> arguments
-pgjdbc.version=42.7.3-yb-1
+pgjdbc.version=42.7.3-yb-2
 
 lastEditYear=2024
 # The options below configures the use of local clone (e.g. testing development versions)

pgjdbc/src/main/java/com/yugabyte/ysql/LoadBalanceService.java

@@ -153,8 +153,8 @@ private static synchronized boolean refresh(Connection conn, long refreshInterva
       Enumeration<String> hosts = clusterInfoMap.keys();
       while (hosts.hasMoreElements()) {
         NodeInfo info = clusterInfoMap.get(hosts.nextElement());
-        clusterInfoMap.put(info.publicIP, info);
         clusterInfoMap.remove(info.host);
+        clusterInfoMap.put(info.publicIP, info);
       }
     } else if (useHostColumn == null) {
       LOGGER.warning("Unable to identify set of addresses to use for establishing connections. "