YARN-9898. Dependency netty-all-4.1.27.Final doesn't support ARM platform. Contributed by liusheng.

hadoop-hdfs-project/hadoop-hdfs-client/pom.xml

@@ -64,7 +64,7 @@ https://maven.apache.org/xsd/maven-4.0.0.xsd">
       <scope>test</scope>
     </dependency>
     <dependency>
-      <groupId>io.netty</groupId>
+      <groupId>${netty4.group}</groupId>
       <artifactId>netty-all</artifactId>
       <scope>test</scope>
     </dependency>

hadoop-hdfs-project/hadoop-hdfs/pom.xml

@@ -176,7 +176,7 @@ https://maven.apache.org/xsd/maven-4.0.0.xsd">
       <scope>compile</scope>
     </dependency>
     <dependency>
-      <groupId>io.netty</groupId>
+      <groupId>${netty4.group}</groupId>
       <artifactId>netty-all</artifactId>
       <scope>compile</scope>
     </dependency>

hadoop-project/pom.xml

@@ -141,6 +141,7 @@
     <metrics.version>3.2.4</metrics.version>
     <netty3.version>3.10.6.Final</netty3.version>
     <netty4.version>4.1.48.Final</netty4.version>
+    <netty4.group>io.netty</netty4.group>
 
     <!-- Maven protoc compiler -->
     <protobuf-maven-plugin.version>0.5.1</protobuf-maven-plugin.version>
@@ -892,7 +893,7 @@
       </dependency>
 
       <dependency>
-        <groupId>io.netty</groupId>
+        <groupId>${netty4.group}</groupId>
         <artifactId>netty-all</artifactId>
         <version>${netty4.version}</version>
       </dependency>
@@ -2215,6 +2216,21 @@
         </plugins>
       </build>
     </profile>
+    <profile>
+      <id>aarch64</id>
+      <properties>
+        <!-- To make hadoop fully support ARM64 now, here add a workaround using an unofficial
+        netty-all package which support ARM64. Once the Netty officially support ARM64 in a
+        new release, we need to remove this and upgrade to use Netty official package -->
+        <netty4.group>org.openlabtesting.netty</netty4.group>
+      </properties>
+      <activation>
+        <os>
+          <family>linux</family>
+          <arch>aarch64</arch>
+        </os>
+      </activation>
+    </profile>
     <profile>
       <id>test-patch</id>
       <activation>

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-csi/pom.xml

@@ -44,7 +44,7 @@
             <version>${protobuf.version}</version>
         </dependency>
         <dependency>
-            <groupId>io.netty</groupId>
+            <groupId>${netty4.group}</groupId>
             <artifactId>netty-all</artifactId>
         </dependency>
         <dependency>