HADOOP-14910. Upgrade netty-all jar to latest 4.0.x.Final. Contributed by Vinayakumar B.

hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/web/webhdfs/ParameterParser.java

@@ -59,8 +59,7 @@ class ParameterParser {
   private final Map<String, List<String>> params;
 
   ParameterParser(QueryStringDecoder decoder, Configuration conf) {
-    this.path = decodeComponent(decoder.path().substring(WEBHDFS_PREFIX_LENGTH),
-        StandardCharsets.UTF_8);
+    this.path = decoder.path().substring(WEBHDFS_PREFIX_LENGTH);
     this.params = decoder.parameters();
     this.conf = conf;
   }

hadoop-project/pom.xml

@@ -749,7 +749,7 @@
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-all</artifactId>
-        <version>4.0.23.Final</version>
+        <version>4.0.52.Final</version>
       </dependency>
 
       <dependency>