HADOOP-15821. Move YARN Registry to Hadoop Registry.

Contributed by Íñigo Goiri

dev-support/bin/dist-layout-stitching

@@ -128,6 +128,7 @@ run cp -p "${ROOT}/README.txt" .
 # Remaining projects will copy only libraries which are not present already in 'share' directory.
 run copy "${ROOT}/hadoop-common-project/hadoop-common/target/hadoop-common-${VERSION}" .
 run copy "${ROOT}/hadoop-common-project/hadoop-nfs/target/hadoop-nfs-${VERSION}" .
+run copy "${ROOT}/hadoop-common-project/hadoop-registry/target/hadoop-registry-${VERSION}" .
 run copy "${ROOT}/hadoop-hdfs-project/hadoop-hdfs/target/hadoop-hdfs-${VERSION}" .
 run copy "${ROOT}/hadoop-hdfs-project/hadoop-hdfs-nfs/target/hadoop-hdfs-nfs-${VERSION}" .
 run copy "${ROOT}/hadoop-hdfs-project/hadoop-hdfs-client/target/hadoop-hdfs-client-${VERSION}" .

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

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.3"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.3 http://maven.apache.org/xsd/assembly-1.1.3.xsd">
+  <id>hadoop-registry-dist</id>
+  <formats>
+    <format>dir</format>
+  </formats>
+  <includeBaseDirectory>false</includeBaseDirectory>
+  <fileSets>
+    <fileSet>
+      <directory>target</directory>
+      <outputDirectory>/share/hadoop/common</outputDirectory>
+      <includes>
+        <include>${project.artifactId}-${project.version}.jar</include>
+      </includes>
+    </fileSet>
+  </fileSets>
+
+  <dependencySets>
+    <dependencySet>
+      <useProjectArtifact>false</useProjectArtifact>
+      <outputDirectory>/share/hadoop/common/lib</outputDirectory>
+    </dependencySet>
+  </dependencySets>
+
+</assembly>
+

hadoop-client-modules/hadoop-client-minicluster/pom.xml

@@ -477,7 +477,7 @@
         </exclusion>
         <exclusion>
           <groupId>org.apache.hadoop</groupId>
-          <artifactId>hadoop-yarn-registry</artifactId>
+          <artifactId>hadoop-registry</artifactId>
         </exclusion>
         <exclusion>
           <groupId>org.apache.hadoop</groupId>

hadoop-common-project/hadoop-common/src/main/bin/hadoop

@@ -43,6 +43,7 @@ function hadoop_usage
   hadoop_add_subcommand "jnipath" client "prints the java.library.path"
   hadoop_add_subcommand "kerbname" client "show auth_to_local principal conversion"
   hadoop_add_subcommand "key" client "manage keys via the KeyProvider"
+  hadoop_add_subcommand "registrydns" daemon "run the registry DNS server"
   hadoop_add_subcommand "trace" client "view and modify Hadoop tracing settings"
   hadoop_add_subcommand "version" client "print the version"
   hadoop_add_subcommand "kdiag" client "Diagnose Kerberos Problems"
@@ -155,6 +156,11 @@ function hadoopcmd_case
     key)
       HADOOP_CLASSNAME=org.apache.hadoop.crypto.key.KeyShell
     ;;
+    registrydns)
+      HADOOP_SUBCMD_SUPPORTDAEMONIZATION="true"
+      HADOOP_SECURE_CLASSNAME='org.apache.hadoop.registry.server.dns.PrivilegedRegistryDNSStarter'
+      HADOOP_CLASSNAME='org.apache.hadoop.registry.server.dns.RegistryDNSServer'
+    ;;
     trace)
       HADOOP_CLASSNAME=org.apache.hadoop.tracing.TraceAdmin
     ;;

hadoop-common-project/hadoop-common/src/main/conf/hadoop-env.sh

@@ -437,3 +437,16 @@ esac
 #
 # For example, to limit who can execute the namenode command,
 # export HDFS_NAMENODE_USER=hdfs
+
+
+###
+# Registry DNS specific parameters
+###
+# For privileged registry DNS, user to run as after dropping privileges
+# This will replace the hadoop.id.str Java property in secure mode.
+# export HADOOP_REGISTRYDNS_SECURE_USER=yarn
+
+# Supplemental options for privileged registry DNS
+# By default, Hadoop uses jsvc which needs to know to launch a
+# server jvm.
+# export HADOOP_REGISTRYDNS_SECURE_EXTRA_OPTS="-jvm server"

hadoop-common-project/hadoop-common/src/site/markdown/registry/hadoop-registry.md

@@ -19,7 +19,7 @@
 
 # Introduction and concepts
 
-This document describes a YARN service registry built to address two problems:
+This document describes a Hadoop service registry built to address two problems:
 
 1. How can clients talk to YARN-deployed services and the components which form
 such services?

hadoop-common-project/hadoop-common/src/site/markdown/registry/index.md

@@ -15,7 +15,7 @@
    limitations under the License.
 -->
 
-# YARN Service Registry
+# Hadoop Service Registry
 
 The Service registry is a service which can be deployed in a Hadoop cluster
 to allow deployed applications to register themselves and the means of
@@ -24,7 +24,8 @@ and use the binding information to connect with the services's network-accessibl
 endpoints, be they REST, IPC, Web UI, Zookeeper quorum+path or some other protocol.
 Currently, all the registry data is stored in a zookeeper cluster.
 
-* [Architecture](yarn-registry.html)
+* [Architecture](hadoop-registry.html)
 * [Configuration](registry-configuration.html)
-* [Using the YARN Service registry](using-the-yarn-service-registry.html)
+* [Using the Hadoop Service registry](using-the-hadoop-service-registry.html)
 * [Security](registry-security.html)
+* [Registry DNS](registry-dns.html)

hadoop-common-project/hadoop-common/src/site/markdown/registry/registry-configuration.md

@@ -15,12 +15,12 @@
 # Registry Configuration
 
 
-The YARN service registry is built on top of Apache Zookeeper.
+The Hadoop service registry is built on top of Apache Zookeeper.
 It is configured by way of a Hadoop `Configuration` class:
 the instance used to create the service controls the behavior of the client.
 
 This document lists the configuration parameters which control the
-registry client and its deployment in the YARN Resource Manager.
+registry client.
 
 The default values of all these settings are defined in `core-default.xml`.
 The values in this file may not match those listed in this document.

hadoop-common-project/hadoop-common/src/site/markdown/registry/registry-dns.md

@@ -15,13 +15,13 @@
 # Registry DNS Server
 
 <!-- MACRO{toc|fromDepth=0|toDepth=3} -->
-The document describes the internals of Registry DNS server. It is based on the [YARN service registry](../registry/index.html) which is backed by a zookeeper cluster.
+The document describes the internals of Registry DNS server. It is based on the [Hadoop service registry](../registry/index.html) which is backed by a zookeeper cluster.
 ## Introduction
 
-The Registry DNS Server provides a standard DNS interface to the information posted into the YARN Registry by deployed applications. The DNS service serves the following functions:
+The Registry DNS Server provides a standard DNS interface to the information posted into the Hadoop Registry by deployed applications. The DNS service serves the following functions:
 
 1. **Exposing existing service-discovery information via DNS** - Information provided in
-the current YARN service registry’s records will be converted into DNS entries, thus
+the current Hadoop service registry’s records will be converted into DNS entries, thus
 allowing users to discover information about YARN applications using standard DNS
 client mechanisms (e.g. a DNS SRV Record specifying the hostname and port
 number for services).
@@ -32,7 +32,7 @@ http://solr-0.solr-service.devuser.yarncluster:8983/solr/admin/collections?actio
 
 ## Service Properties
 
-The existing YARN Service Registry is leveraged as the source of information for the DNS Service.
+The existing Hadoop Service Registry is leveraged as the source of information for the DNS Service.
 
 The following core functions are supported by the DNS-Server:
 
@@ -139,21 +139,21 @@ RegistryDNS service configured as a forwarder).
 By default, the DNS server runs on non-privileged port `5335`. Start the server
 with:
 ```
-yarn --daemon start registrydns
+hadoop --daemon start registrydns
 ```
 
 If the DNS server is configured to use the standard privileged port `53`, the
-environment variables YARN\_REGISTRYDNS\_SECURE\_USER and
-YARN\_REGISTRYDNS\_SECURE\_EXTRA\_OPTS must be uncommented in the yarn-env.sh
+environment variables HADOOP\_REGISTRYDNS\_SECURE\_USER and
+HADOOP\_REGISTRYDNS\_SECURE\_EXTRA\_OPTS must be uncommented in the hadoop-env.sh
 file. The DNS server should then be launched as root and jsvc will be used to
 reduce the privileges of the daemon after the port has been bound.
 
 ## Configuration
-The Registry DNS server reads its configuration properties from the yarn-site.xml file.  The following are the DNS associated configuration properties:
+The Registry DNS server reads its configuration properties from the core-site.xml file.  The following are the DNS associated configuration properties:
 
 | Name | Description |
 | ------------ | ------------- |
-|hadoop.registry.zk.quorum| A comma separated list of hostname:port pairs defining the zookeeper quorum for the [YARN registry](../registry/registry-configuration.html). |
+|hadoop.registry.zk.quorum| A comma separated list of hostname:port pairs defining the zookeeper quorum for the [Hadoop registry](../registry/registry-configuration.html). |
 | hadoop.registry.dns.enabled | The DNS functionality is enabled for the cluster. Default is false. |
 | hadoop.registry.dns.domain-name  | The domain name for Hadoop cluster associated records.  |
 | hadoop.registry.dns.bind-address | Address associated with the network interface to which the DNS listener should bind.  |
@@ -193,8 +193,32 @@ The Registry DNS server reads its configuration properties from the yarn-site.xm
   </property>
 
   <property>
-    <description>A comma separated list of hostname:port pairs defining the zookeeper quorum for the YARN registry</description>
+    <description>A comma separated list of hostname:port pairs defining the zookeeper quorum for the Hadoop registry</description>
     <name>hadoop.registry.zk.quorum</name>
     <value>localhost:2181</value>
   </property>
   ```
+
+To configure Registry DNS to serve reverse lookup for `172.17.0.0/24`
+```
+  <property>
+    <description>The network mask associated with the zone IP range. If specified, it is utilized to ascertain the
+    IP range possible and come up with an appropriate reverse zone name.</description>
+    <name>hadoop.registry.dns.zone-mask</name>
+    <value>255.255.255.0</value>
+  </property>
+
+  <property>
+    <description>An indicator of the IP range associated with the cluster containers. The setting is utilized for the
+     generation of the reverse zone name.</description>
+    <name>hadoop.registry.dns.zone-subnet</name>
+    <value>172.17.0.0</value>
+  </property>
+```
+
+## Make your cluster use Registry DNS
+You can edit the `/etc/resolv.conf` to make your system use the registry DNS such as below, where `192.168.154.3` is the ip address of your DNS host. It should appear before any nameservers that would return NXDOMAIN for lookups in the domain used by the cluster.
+```
+nameserver 192.168.154.3
+```
+Alternatively, if you have a corporate DNS in your organization, you can configure zone forwarding so that the Registry DNS resolves hostnames for the domain used by the cluster.

hadoop-common-project/hadoop-common/src/site/markdown/registry/using-the-hadoop-service-registry.md

@@ -15,9 +15,9 @@
    limitations under the License.
 -->
 
-# Using the YARN Service Registry
+# Using the Hadoop Service Registry
 
-The YARN service registry can be used in a numbe of ways :-
+The Hadoop service registry can be used in a number of ways :-
 
 1. To register dynamic YARN-deployed applications with entries that match the
    lifespan of the YARN application.
@@ -26,7 +26,7 @@ The YARN service registry can be used in a numbe of ways :-
    or an individual container.
 1. To look up static or dynamic applications and the mechanisms to communicate
    with them.
-   Those mechanisms can incude: HTTP(S) URLs, Zookeeper paths,
+   Those mechanisms can include: HTTP(S) URLs, Zookeeper paths,
    hostnames and ports and even paths in a Hadoop filesystem to
    configuration data.
 1. On a secure cluster, to verify that a service binding has been published

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

@@ -0,0 +1,298 @@
+<?xml version="1.0"?>
+<!--
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License. See accompanying LICENSE file.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
+                      http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <parent>
+    <artifactId>hadoop-project</artifactId>
+    <groupId>org.apache.hadoop</groupId>
+    <version>3.3.0-SNAPSHOT</version>
+  </parent>
+  <modelVersion>4.0.0</modelVersion>
+  <artifactId>hadoop-registry</artifactId>
+  <version>3.3.0-SNAPSHOT</version>
+  <name>Apache Hadoop Registry</name>
+
+  <dependencies>
+
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-api</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.hadoop</groupId>
+      <artifactId>hadoop-auth</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.hadoop</groupId>
+      <artifactId>hadoop-annotations</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.hadoop</groupId>
+      <artifactId>hadoop-common</artifactId>
+    </dependency>
+
+    <!-- needed for TimedOutTestsListener -->
+    <dependency>
+      <groupId>org.apache.hadoop</groupId>
+      <artifactId>hadoop-common</artifactId>
+      <type>test-jar</type>
+      <scope>test</scope>
+    </dependency>
+
+    <!-- Mini KDC is used for testing -->
+    <dependency>
+      <groupId>org.apache.hadoop</groupId>
+      <artifactId>hadoop-minikdc</artifactId>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.zookeeper</groupId>
+      <artifactId>zookeeper</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.curator</groupId>
+      <artifactId>curator-client</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.curator</groupId>
+      <artifactId>curator-framework</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>org.apache.curator</groupId>
+      <artifactId>curator-recipes</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>commons-cli</groupId>
+      <artifactId>commons-cli</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>commons-daemon</groupId>
+      <artifactId>commons-daemon</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>commons-io</groupId>
+      <artifactId>commons-io</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>commons-net</groupId>
+      <artifactId>commons-net</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>com.fasterxml.jackson.core</groupId>
+      <artifactId>jackson-annotations</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>com.fasterxml.jackson.core</groupId>
+      <artifactId>jackson-core</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>com.fasterxml.jackson.core</groupId>
+      <artifactId>jackson-databind</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>com.google.guava</groupId>
+      <artifactId>guava</artifactId>
+    </dependency>
+
+    <dependency>
+      <groupId>dnsjava</groupId>
+      <artifactId>dnsjava</artifactId>
+    </dependency>
+
+  </dependencies>
+
+  <build>
+    <!--
+    Include all files in src/main/resources.  By default, do not apply property
+    substitution (filtering=false), but do apply property substitution to
+    yarn-version-info.properties (filtering=true).  This will substitute the
+    version information correctly, but prevent Maven from altering other files
+    like yarn-default.xml.
+    -->
+    <resources>
+      <resource>
+        <directory>${basedir}/src/main/resources</directory>
+        <excludes>
+          <exclude>yarn-version-info.properties</exclude>
+        </excludes>
+        <filtering>false</filtering>
+      </resource>
+      <resource>
+        <directory>${basedir}/src/main/resources</directory>
+        <includes>
+          <include>yarn-version-info.properties</include>
+        </includes>
+        <filtering>true</filtering>
+      </resource>
+    </resources>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.rat</groupId>
+        <artifactId>apache-rat-plugin</artifactId>
+        <configuration>
+          <excludes>
+            <exclude>src/main/resources/.keep</exclude>
+          </excludes>
+        </configuration>
+      </plugin>
+      <plugin>
+        <groupId>org.apache.hadoop</groupId>
+        <artifactId>hadoop-maven-plugins</artifactId>
+        <executions>
+          <execution>
+            <id>version-info</id>
+            <phase>generate-resources</phase>
+            <goals>
+              <goal>version-info</goal>
+            </goals>
+            <configuration>
+              <source>
+                <directory>${basedir}/src/main</directory>
+                <includes>
+                  <include>java/**/*.java</include>
+                  <!--
+                  <include>proto/**/*.proto</include>
+                    -->
+                </includes>
+              </source>
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
+      <plugin>
+        <artifactId>maven-jar-plugin</artifactId>
+        <executions>
+          <execution>
+            <goals>
+              <goal>test-jar</goal>
+            </goals>
+            <phase>test-compile</phase>
+          </execution>
+        </executions>
+      </plugin>
+
+      <plugin>
+      <groupId>org.apache.maven.plugins</groupId>
+      <artifactId>maven-surefire-plugin</artifactId>
+      <configuration>
+        <reuseForks>false</reuseForks>
+        <forkedProcessTimeoutInSeconds>900</forkedProcessTimeoutInSeconds>
+        <argLine>-Xmx1024m -XX:+HeapDumpOnOutOfMemoryError</argLine>
+        <environmentVariables>
+          <!-- HADOOP_HOME required for tests on Windows to find winutils -->
+          <HADOOP_HOME>${hadoop.common.build.dir}</HADOOP_HOME>
+          <!-- configurable option to turn JAAS debugging on during test runs -->
+          <HADOOP_JAAS_DEBUG>true</HADOOP_JAAS_DEBUG>
+          <LD_LIBRARY_PATH>${env.LD_LIBRARY_PATH}:${project.build.directory}/native/target/usr/local/lib:${hadoop.common.build.dir}/native/target/usr/local/lib</LD_LIBRARY_PATH>
+          <MALLOC_ARENA_MAX>4</MALLOC_ARENA_MAX>
+        </environmentVariables>
+        <systemPropertyVariables>
+
+          <hadoop.log.dir>${project.build.directory}/log</hadoop.log.dir>
+          <hadoop.tmp.dir>${project.build.directory}/tmp</hadoop.tmp.dir>
+
+          <!-- TODO: all references in testcases should be updated to this default -->
+          <test.build.dir>${test.build.dir}</test.build.dir>
+          <test.build.data>${test.build.data}</test.build.data>
+          <test.build.webapps>${test.build.webapps}</test.build.webapps>
+          <test.cache.data>${test.cache.data}</test.cache.data>
+          <test.build.classes>${test.build.classes}</test.build.classes>
+
+          <java.net.preferIPv4Stack>true</java.net.preferIPv4Stack>
+          <java.security.krb5.conf>${project.build.directory}/test-classes/krb5.conf</java.security.krb5.conf>
+          <java.security.egd>${java.security.egd}</java.security.egd>
+          <require.test.libhadoop>${require.test.libhadoop}</require.test.libhadoop>
+        </systemPropertyVariables>
+        <includes>
+          <include>**/Test*.java</include>
+        </includes>
+        <excludes>
+          <exclude>**/${test.exclude}.java</exclude>
+          <exclude>${test.exclude.pattern}</exclude>
+          <exclude>**/Test*$*.java</exclude>
+        </excludes>
+      </configuration>
+    </plugin>
+
+
+    </plugins>
+  </build>
+
+  <profiles>
+    <profile>
+      <id>dist</id>
+      <activation>
+        <activeByDefault>false</activeByDefault>
+      </activation>
+      <build>
+        <plugins>
+          <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-assembly-plugin</artifactId>
+            <dependencies>
+              <dependency>
+                <groupId>org.apache.hadoop</groupId>
+                <artifactId>hadoop-assemblies</artifactId>
+                <version>${project.version}</version>
+              </dependency>
+            </dependencies>
+            <executions>
+              <execution>
+                <id>dist</id>
+                <phase>package</phase>
+                <goals>
+                  <goal>single</goal>
+                </goals>
+                <configuration>
+                  <finalName>${project.artifactId}-${project.version}
+                  </finalName>
+                  <appendAssemblyId>false</appendAssemblyId>
+                  <attach>false</attach>
+                  <descriptors>
+                    <descriptor>../../hadoop-assemblies/src/main/resources/assemblies/hadoop-registry-dist.xml</descriptor>
+                  </descriptors>
+                </configuration>
+              </execution>
+            </executions>
+          </plugin>
+        </plugins>
+      </build>
+    </profile>
+  </profiles>
+
+</project>

hadoop-common-project/hadoop-registry/src/main/java/org/apache/hadoop/registry/client/api/RegistryConstants.java

@@ -31,8 +31,6 @@ public interface RegistryConstants {
 
   /**
    * prefix for registry configuration options: {@value}.
-   * Why <code>hadoop.</code> and not YARN? It can
-   * live outside YARN
    */
   String REGISTRY_PREFIX = "hadoop.registry.";
 
@@ -177,7 +175,7 @@ public interface RegistryConstants {
   String KEY_REGISTRY_ZK_ROOT = ZK_PREFIX + "root";
 
   /**
-   * Default root of the yarn registry: {@value}.
+   * Default root of the Hadoop registry: {@value}.
    */
   String DEFAULT_ZK_REGISTRY_ROOT = "/registry";
 

hadoop-common-project/hadoop-registry/src/main/java/org/apache/hadoop/registry/client/impl/FSRegistryOperationsService.java

@@ -44,7 +44,6 @@ import org.apache.hadoop.registry.client.exceptions.NoRecordException;
 import org.apache.hadoop.registry.client.types.RegistryPathStatus;
 import org.apache.hadoop.registry.client.types.ServiceRecord;
 import org.apache.hadoop.service.CompositeService;
-import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -81,7 +80,7 @@ public class FSRegistryOperationsService extends CompositeService
           + fs.getClass().getCanonicalName());
     } catch (IOException e) {
       LOG.error("Failed to get FileSystem for registry", e);
-      throw new YarnRuntimeException(e);
+      throw new RuntimeException(e);
     }
   }
 

hadoop-common-project/hadoop-registry/src/main/java/org/apache/hadoop/registry/conf/RegistryConfiguration.java

@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.registry.conf;
+
+import org.apache.hadoop.conf.Configuration;
+
+/**
+ * Intermediate configuration class to import the keys from YarnConfiguration
+ * in yarn-default.xml and yarn-site.xml. Once hadoop-yarn-registry is totally
+ * deprecated, this should be deprecated.
+ */
+public class RegistryConfiguration extends Configuration {
+
+  static {
+    Configuration.addDefaultResource("yarn-default.xml");
+    Configuration.addDefaultResource("yarn-site.xml");
+  }
+
+  /**
+   * Default constructor which relies on the static method to import the YARN
+   * settings.
+   */
+  public RegistryConfiguration() {
+    super();
+  }
+}

hadoop-common-project/hadoop-registry/src/main/java/org/apache/hadoop/registry/conf/package-info.java

@@ -0,0 +1,22 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Configuration for the Hadoop Service Registry.
+ */
+package org.apache.hadoop.registry.conf;

hadoop-common-project/hadoop-registry/src/main/java/org/apache/hadoop/registry/server/dns/PrivilegedRegistryDNSStarter.java

@@ -19,10 +19,11 @@ package org.apache.hadoop.registry.server.dns;
 
 import org.apache.commons.daemon.Daemon;
 import org.apache.commons.daemon.DaemonContext;
+import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.registry.client.api.DNSOperationsFactory;
+import org.apache.hadoop.registry.conf.RegistryConfiguration;
 import org.apache.hadoop.util.GenericOptionsParser;
 import org.apache.hadoop.util.StringUtils;
-import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -37,7 +38,7 @@ public class PrivilegedRegistryDNSStarter implements Daemon {
   private static final Logger LOG =
       LoggerFactory.getLogger(PrivilegedRegistryDNSStarter.class);
 
-  private YarnConfiguration conf;
+  private Configuration conf;
   private RegistryDNS registryDNS;
   private RegistryDNSServer registryDNSServer;
 
@@ -45,7 +46,7 @@ public class PrivilegedRegistryDNSStarter implements Daemon {
   public void init(DaemonContext context) throws Exception {
     String[] args = context.getArguments();
     StringUtils.startupShutdownMessage(RegistryDNSServer.class, args, LOG);
-    conf = new YarnConfiguration();
+    conf = new RegistryConfiguration();
     new GenericOptionsParser(conf, args);
 
     int port = conf.getInt(KEY_DNS_PORT, DEFAULT_DNS_PORT);

hadoop-common-project/hadoop-registry/src/main/java/org/apache/hadoop/registry/server/dns/RegistryDNS.java

@@ -412,7 +412,7 @@ public class RegistryDNS extends AbstractService implements DNSOperations,
     Boolean shouldSplitReverseZone = conf.getBoolean(KEY_DNS_SPLIT_REVERSE_ZONE,
         DEFAULT_DNS_SPLIT_REVERSE_ZONE);
     if (shouldSplitReverseZone) {
-      int subnetCount = ReverseZoneUtils.getSubnetCountForReverseZones(conf);
+      long subnetCount = ReverseZoneUtils.getSubnetCountForReverseZones(conf);
       addSplitReverseZones(conf, subnetCount);
       // Single reverse zone
     } else {
@@ -434,7 +434,7 @@ public class RegistryDNS extends AbstractService implements DNSOperations,
    * @throws IOException if the DNSSEC key can not be read.
    */
   @VisibleForTesting
-  protected void addSplitReverseZones(Configuration conf, int subnetCount)
+  protected void addSplitReverseZones(Configuration conf, long subnetCount)
       throws IOException {
     String subnet = conf.get(KEY_DNS_ZONE_SUBNET);
     String range = conf.get(KEY_DNS_SPLIT_REVERSE_ZONE_RANGE);
@@ -513,7 +513,7 @@ public class RegistryDNS extends AbstractService implements DNSOperations,
     Name reverseZoneName = null;
     boolean isLargeNetwork = false;
     if (utils != null) {
-      isLargeNetwork = utils.getInfo().getAddressCount() > 256;
+      isLargeNetwork = utils.getInfo().getAddressCountLong() > 256;
     }
     final String[] bytes = networkAddress.split("\\.");
     if (bytes.length == 4) {

hadoop-common-project/hadoop-registry/src/main/java/org/apache/hadoop/registry/server/dns/RegistryDNSServer.java

@@ -27,13 +27,13 @@ import org.apache.hadoop.registry.client.impl.zk.PathListener;
 import org.apache.hadoop.registry.client.impl.zk.RegistryOperationsService;
 import org.apache.hadoop.registry.client.types.RegistryPathStatus;
 import org.apache.hadoop.registry.client.types.ServiceRecord;
+import org.apache.hadoop.registry.conf.RegistryConfiguration;
 import org.apache.hadoop.service.CompositeService;
+import org.apache.hadoop.service.launcher.HadoopUncaughtExceptionHandler;
 import org.apache.hadoop.util.ExitUtil;
 import org.apache.hadoop.util.GenericOptionsParser;
 import org.apache.hadoop.util.ShutdownHookManager;
 import org.apache.hadoop.util.StringUtils;
-import org.apache.hadoop.yarn.YarnUncaughtExceptionHandler;
-import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -237,8 +237,8 @@ public class RegistryDNSServer extends CompositeService {
       RegistryDNS rdns) {
     RegistryDNSServer dnsServer = null;
 
-    Thread
-        .setDefaultUncaughtExceptionHandler(new YarnUncaughtExceptionHandler());
+    Thread.setDefaultUncaughtExceptionHandler(
+        new HadoopUncaughtExceptionHandler());
     try {
       dnsServer = new RegistryDNSServer("RegistryDNSServer", rdns);
       ShutdownHookManager.get().addShutdownHook(
@@ -260,7 +260,7 @@ public class RegistryDNSServer extends CompositeService {
    */
   public static void main(String[] args) throws IOException {
     StringUtils.startupShutdownMessage(RegistryDNSServer.class, args, LOG);
-    YarnConfiguration conf = new YarnConfiguration();
+    Configuration conf = new RegistryConfiguration();
     new GenericOptionsParser(conf, args);
     launchDNSServer(conf, null);
   }

hadoop-common-project/hadoop-registry/src/main/java/org/apache/hadoop/registry/server/dns/ReverseZoneUtils.java

@@ -76,7 +76,7 @@ public final class ReverseZoneUtils {
    * @param conf the Hadoop configuration.
    * @return The number of subnets given the range and netmask.
    */
-  protected static int getSubnetCountForReverseZones(Configuration conf) {
+  protected static long getSubnetCountForReverseZones(Configuration conf) {
     String subnet = conf.get(KEY_DNS_ZONE_SUBNET);
     String mask = conf.get(KEY_DNS_ZONE_MASK);
     String range = conf.get(KEY_DNS_SPLIT_REVERSE_ZONE_RANGE);
@@ -96,11 +96,11 @@ public final class ReverseZoneUtils {
       throw new IllegalArgumentException(msg);
     }
 
-    int ipCount;
+    long ipCount;
     try {
       SubnetUtils subnetUtils = new SubnetUtils(subnet, mask);
       subnetUtils.setInclusiveHostCount(true);
-      ipCount = subnetUtils.getInfo().getAddressCount();
+      ipCount = subnetUtils.getInfo().getAddressCountLong();
 
     } catch (IllegalArgumentException e) {
       LOG.error("The subnet or mask is invalid: Subnet: {} Mask: {}", subnet,

hadoop-common-project/hadoop-registry/src/main/tla/hadoopregistry.tla

@@ -1,4 +1,4 @@
----------------------------- MODULE yarnregistry ----------------------------
+---------------------------- MODULE hadoopregistry ----------------------------
 
 EXTENDS FiniteSets, Sequences, Naturals, TLC
 
@@ -27,7 +27,7 @@ EXTENDS FiniteSets, Sequences, Naturals, TLC
 
 ============================================================================
 
-This defines the YARN registry in terms of operations on sets of records.
+This defines the Hadoop registry in terms of operations on sets of records.
 
 Every registry entry is represented as a record containing both the path and the data.
 

hadoop-common-project/hadoop-registry/src/test/java/org/apache/hadoop/registry/AbstractZKRegistryTest.java

@@ -21,8 +21,8 @@ package org.apache.hadoop.registry;
 import org.apache.commons.io.FileUtils;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.service.Service;
-import org.apache.hadoop.yarn.conf.YarnConfiguration;
 import org.apache.hadoop.registry.client.api.RegistryConstants;
+import org.apache.hadoop.registry.conf.RegistryConfiguration;
 import org.apache.hadoop.registry.server.services.AddingCompositeService;
 import org.apache.hadoop.registry.server.services.MicroZookeeperService;
 import org.apache.hadoop.registry.server.services.MicroZookeeperServiceKeys;
@@ -76,7 +76,7 @@ public class AbstractZKRegistryTest extends RegistryTestHelper {
     FileUtils.deleteDirectory(zkDir);
     assertTrue(zkDir.mkdirs());
     zookeeper = new MicroZookeeperService("InMemoryZKService");
-    YarnConfiguration conf = new YarnConfiguration();
+    Configuration conf = new RegistryConfiguration();
     conf.set(MicroZookeeperServiceKeys.KEY_ZKSERVICE_DIR, zkDir.getAbsolutePath());
     zookeeper.init(conf);
     zookeeper.start();
@@ -100,8 +100,8 @@ public class AbstractZKRegistryTest extends RegistryTestHelper {
     return zookeeper.getConnectionString();
   }
 
-  public YarnConfiguration createRegistryConfiguration() {
-    YarnConfiguration conf = new YarnConfiguration();
+  public Configuration createRegistryConfiguration() {
+    Configuration conf = new RegistryConfiguration();
     conf.setInt(RegistryConstants.KEY_REGISTRY_ZK_CONNECTION_TIMEOUT, 1000);
     conf.setInt(RegistryConstants.KEY_REGISTRY_ZK_RETRY_INTERVAL, 500);
     conf.setInt(RegistryConstants.KEY_REGISTRY_ZK_RETRY_TIMES, 10);

hadoop-common-project/hadoop-registry/src/test/java/org/apache/hadoop/registry/client/impl/TestMicroZookeeperService.java

@@ -19,7 +19,8 @@
 package org.apache.hadoop.registry.client.impl;
 
 import org.apache.hadoop.service.ServiceOperations;
-import org.apache.hadoop.yarn.conf.YarnConfiguration;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.registry.conf.RegistryConfiguration;
 import org.apache.hadoop.registry.server.services.MicroZookeeperService;
 import org.junit.After;
 import org.junit.Assert;
@@ -50,7 +51,7 @@ public class TestMicroZookeeperService extends Assert {
 
   @Test
   public void testTempDirSupport() throws Throwable {
-    YarnConfiguration conf = new YarnConfiguration();
+    Configuration conf = new RegistryConfiguration();
     zookeeper = new MicroZookeeperService("t1");
     zookeeper.init(conf);
     zookeeper.start();

hadoop-common-project/hadoop-registry/src/test/java/org/apache/hadoop/registry/secure/AbstractSecureRegistryTest.java

@@ -49,6 +49,7 @@ import javax.security.auth.login.LoginException;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
+import java.nio.charset.Charset;
 import java.security.Principal;
 import java.util.HashSet;
 import java.util.Properties;
@@ -219,7 +220,7 @@ public class AbstractSecureRegistryTest extends RegistryTestHelper {
         BOB_LOCALHOST, keytab_bob));
 
     jaasFile = new File(kdcWorkDir, "jaas.txt");
-    FileUtils.write(jaasFile, jaas.toString());
+    FileUtils.write(jaasFile, jaas.toString(), Charset.defaultCharset());
     LOG.info("\n"+ jaas);
     RegistrySecurity.bindJVMtoJAASFile(jaasFile);
   }

hadoop-common-project/hadoop-registry/src/test/java/org/apache/hadoop/registry/secure/TestSecureLogins.java

@@ -20,6 +20,7 @@ package org.apache.hadoop.registry.secure;
 import java.io.File;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Method;
+import java.nio.charset.Charset;
 import java.security.Principal;
 import java.security.PrivilegedExceptionAction;
 import java.util.HashMap;
@@ -88,7 +89,8 @@ public class TestSecureLogins extends AbstractSecureRegistryTest {
       logLoginDetails(ALICE_LOCALHOST, client);
       String confFilename = System.getProperty(Environment.JAAS_CONF_KEY);
       assertNotNull("Unset: "+ Environment.JAAS_CONF_KEY, confFilename);
-      String config = FileUtils.readFileToString(new File(confFilename));
+      String config = FileUtils.readFileToString(new File(confFilename),
+          Charset.defaultCharset());
       LOG.info("{}=\n{}", confFilename, config);
       RegistrySecurity.setZKSaslClientProperties(ALICE, ALICE_CLIENT_CONTEXT);
     } finally {
@@ -127,7 +129,8 @@ public class TestSecureLogins extends AbstractSecureRegistryTest {
   @Test
   public void testKerberosAuth() throws Throwable {
     File krb5conf = getKdc().getKrb5conf();
-    String krbConfig = FileUtils.readFileToString(krb5conf);
+    String krbConfig = FileUtils.readFileToString(krb5conf,
+        Charset.defaultCharset());
     LOG.info("krb5.conf at {}:\n{}", krb5conf, krbConfig);
     Subject subject = new Subject();
     Class<?> kerb5LoginClass =