HADOOP-18088. Replace log4j 1.x with reload4j.

Co-authored-by: Wei-Chiu Chuang <weichiu@apache.org>

Author: iwasakims

NOTICE.txt

@@ -223,13 +223,13 @@ framework, which can be obtained at:
   * HOMEPAGE:
     * http://commons.apache.org/logging/
 
-This product optionally depends on 'Apache Log4J', a logging framework, which
+This product optionally depends on 'reload4j', a logging framework, which
 can be obtained at:
 
   * LICENSE:
-    * license/LICENSE.log4j.txt (Apache License 2.0)
+    * license/LICENSE.reload4j.txt (Apache License 2.0)
   * HOMEPAGE:
-    * http://logging.apache.org/log4j/
+    * https://reload4j.qos.ch/
 
 This product optionally depends on 'Aalto XML', an ultra-high performance
 non-blocking XML processor, which can be obtained at:
@@ -271,7 +271,7 @@ which has the following notices:
  * This product includes software from the Spring Framework,under the Apache License 2.0 (see: StringUtils.containsWhitespace())
 
 The binary distribution of this product bundles binaries of
-Apache Log4j 1.2.17,
+reload4j 1.2.18.3,
 which has the following notices:
  * ResolverUtil.java
     Copyright 2005-2006 Tim Fennell

hadoop-assemblies/src/main/resources/assemblies/hadoop-hdfs-nfs-dist.xml

@@ -38,7 +38,7 @@
         <exclude>org.apache.hadoop:hadoop-hdfs</exclude>
         <!-- use slf4j from common to avoid multiple binding warnings -->
         <exclude>org.slf4j:slf4j-api</exclude>
-        <exclude>org.slf4j:slf4j-log4j12</exclude>
+        <exclude>org.slf4j:slf4j-reload4j</exclude>
         <exclude>org.hsqldb:hsqldb</exclude>
       </excludes>
     </dependencySet>

hadoop-assemblies/src/main/resources/assemblies/hadoop-mapreduce-dist.xml

@@ -181,7 +181,7 @@
         <exclude>org.apache.hadoop:hadoop-hdfs</exclude>
         <!-- use slf4j from common to avoid multiple binding warnings -->
         <exclude>org.slf4j:slf4j-api</exclude>
-        <exclude>org.slf4j:slf4j-log4j12</exclude>
+        <exclude>org.slf4j:slf4j-reload4j</exclude>
         <exclude>org.hsqldb:hsqldb</exclude>
       </excludes>
     </dependencySet>

hadoop-assemblies/src/main/resources/assemblies/hadoop-nfs-dist.xml

@@ -38,7 +38,7 @@
         <exclude>org.apache.hadoop:hadoop-hdfs</exclude>
         <!-- use slf4j from common to avoid multiple binding warnings -->
         <exclude>org.slf4j:slf4j-api</exclude>
-        <exclude>org.slf4j:slf4j-log4j12</exclude>
+        <exclude>org.slf4j:slf4j-reload4j</exclude>
         <exclude>org.hsqldb:hsqldb</exclude>
       </excludes>
     </dependencySet>

hadoop-assemblies/src/main/resources/assemblies/hadoop-tools.xml

@@ -145,7 +145,7 @@
         <exclude>org.apache.hadoop:hadoop-pipes</exclude>
         <!-- use slf4j from common to avoid multiple binding warnings -->
         <exclude>org.slf4j:slf4j-api</exclude>
-        <exclude>org.slf4j:slf4j-log4j12</exclude>
+        <exclude>org.slf4j:slf4j-reload4j</exclude>
       </excludes>
     </dependencySet>
   </dependencySets>

hadoop-assemblies/src/main/resources/assemblies/hadoop-yarn-dist.xml

@@ -276,7 +276,7 @@
         <exclude>com.fasterxml.jackson.core:*</exclude>
         <!-- use slf4j from common to avoid multiple binding warnings -->
         <exclude>org.slf4j:slf4j-api</exclude>
-        <exclude>org.slf4j:slf4j-log4j12</exclude>
+        <exclude>org.slf4j:slf4j-reload4j</exclude>
         <exclude>org.hsqldb:hsqldb</exclude>
       </excludes>
     </dependencySet>

hadoop-common-project/hadoop-auth-examples/pom.xml

@@ -48,13 +48,13 @@
       <scope>compile</scope>
     </dependency>
     <dependency>
-      <groupId>log4j</groupId>
-      <artifactId>log4j</artifactId>
+      <groupId>ch.qos.reload4j</groupId>
+      <artifactId>reload4j</artifactId>
       <scope>runtime</scope>
     </dependency>
     <dependency>
       <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-log4j12</artifactId>
+      <artifactId>slf4j-reload4j</artifactId>
       <scope>runtime</scope>
     </dependency>
   </dependencies>

hadoop-common-project/hadoop-auth/pom.xml

@@ -88,13 +88,13 @@
       <scope>compile</scope>
     </dependency>
     <dependency>
-      <groupId>log4j</groupId>
-      <artifactId>log4j</artifactId>
+      <groupId>ch.qos.reload4j</groupId>
+      <artifactId>reload4j</artifactId>
       <scope>runtime</scope>
     </dependency>
     <dependency>
       <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-log4j12</artifactId>
+      <artifactId>slf4j-reload4j</artifactId>
       <scope>runtime</scope>
     </dependency>
     <dependency>
@@ -164,6 +164,10 @@
           <groupId>org.apache.directory.api</groupId>
           <artifactId>api-ldap-schema-data</artifactId>
         </exclusion>
+        <exclusion>
+          <groupId>log4j</groupId>
+          <artifactId>log4j</artifactId>
+        </exclusion>
       </exclusions>
     </dependency>
     <dependency>

hadoop-common-project/hadoop-common/pom.xml

@@ -138,8 +138,8 @@
       <scope>compile</scope>
     </dependency>
     <dependency>
-      <groupId>log4j</groupId>
-      <artifactId>log4j</artifactId>
+      <groupId>ch.qos.reload4j</groupId>
+      <artifactId>reload4j</artifactId>
       <scope>compile</scope>
     </dependency>
     <dependency>
@@ -200,7 +200,7 @@
     </dependency>
     <dependency>
       <groupId>org.slf4j</groupId>
-      <artifactId>slf4j-log4j12</artifactId>
+      <artifactId>slf4j-reload4j</artifactId>
       <scope>compile</scope>
     </dependency>
     <dependency>

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/GenericsUtil.java

@@ -25,7 +25,7 @@
 import org.apache.hadoop.classification.InterfaceStability;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
-import org.slf4j.impl.Log4jLoggerAdapter;
+import org.slf4j.impl.Reload4jLoggerAdapter;
 
 /**
  * Contains utility methods for dealing with Java Generics. 
@@ -85,6 +85,6 @@ public static boolean isLog4jLogger(Class<?> clazz) {
       return false;
     }
     Logger log = LoggerFactory.getLogger(clazz);
-    return log instanceof Log4jLoggerAdapter;
+    return log instanceof Reload4jLoggerAdapter;
   }
 }