[GitHub] [hadoop] hadoop-yetus commented on a change in pull request #1480: HDFS-14857 FS operations fail in HA mode: DataNode fails to connect to NameNode

[GitBox <gi...@apache.org>]

hadoop-yetus commented on a change in pull request #1480: HDFS-14857 FS operations fail in HA mode: DataNode fails to connect to NameNode
URL: https://github.com/apache/hadoop/pull/1480#discussion_r331361449
 
 

 ##########
 File path: hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/server/namenode/ha/ConfiguredFailoverProxyProvider.java
 ##########
 @@ -93,4 +98,24 @@ public synchronized void close() throws IOException {
   public boolean useLogicalURI() {
     return true;
   }
+
+  /**
+   * Resets the NameNode proxy address in case it's stale
+   */
+  protected void resetProxyAddress(List<NNProxyInfo<T>> proxies, int index) {
+    try {
+      stopProxy(proxies.get(index).proxy);
+      InetSocketAddress oldAddress = proxies.get(index).getAddress();
+      InetSocketAddress address = NetUtils.createSocketAddr(
+              oldAddress.getHostName() + ":" + oldAddress.getPort());
+      LOG.debug("oldAddress {}, newAddress {}", oldAddress, address);
+      proxies.set(index, new NNProxyInfo<T>(address));
+    } catch (Exception e) {
+      throw new RuntimeException("Could not refresh NN address", e);
+    }
+  }
+  
 
 Review comment:
   whitespace:end of line
   

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