RBF: fix code

Author: xiezhineng

hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterClientProtocol.java

@@ -614,7 +614,7 @@ public boolean rename(final String src, final String dst)
         new Class<?>[] {String.class, String.class},
         new RemoteParam(), dstParam);
     if (isMultiDestDirectory(src)) {
-      if (locs.size() == srcLocations.size()) {
+      if (locs.size() != srcLocations.size()) {
         throw new IOException(
             "Rename of " + src + " to " + dst + " is not allowed," +
                 " The remote location should be exactly same.");
@@ -646,7 +646,7 @@ public void rename2(final String src, final String dst,
         new Class<?>[] {String.class, String.class, options.getClass()},
         new RemoteParam(), dstParam, options);
     if (isMultiDestDirectory(src)) {
-      if (locs.size() == srcLocations.size()) {
+      if (locs.size() != srcLocations.size()) {
         throw new IOException(
             "Rename of " + src + " to " + dst + " is not allowed," +
                 " The remote location should be exactly same.");