YARN-10053. Use Shared Group Mapping Service in Placement Rules.

Contributed by Wilfred Spiegelenburg.

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/placement/PrimaryGroupPlacementRule.java

@@ -50,7 +50,8 @@ public class PrimaryGroupPlacementRule extends FSPlacementRule {
   @Override
   public boolean initialize(ResourceScheduler scheduler) throws IOException {
     super.initialize(scheduler);
-    groupProvider = new Groups(((FairScheduler)scheduler).getConfig());
+    groupProvider = Groups.
+        getUserToGroupsMappingService(((FairScheduler)scheduler).getConfig());
 
     return true;
   }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/placement/SecondaryGroupExistingPlacementRule.java

@@ -53,7 +53,8 @@ public class SecondaryGroupExistingPlacementRule extends FSPlacementRule {
   @Override
   public boolean initialize(ResourceScheduler scheduler) throws IOException {
     super.initialize(scheduler);
-    groupProvider = new Groups(((FairScheduler)scheduler).getConfig());
+    groupProvider = Groups.
+        getUserToGroupsMappingService(((FairScheduler)scheduler).getConfig());
 
     return true;
   }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/placement/UserGroupMappingPlacementRule.java

@@ -366,9 +366,9 @@ public class UserGroupMappingPlacementRule extends PlacementRule {
 
     // initialize groups if mappings are present
     if (newMappings.size() > 0) {
-      Groups groups = new Groups(conf);
       this.mappings = newMappings;
-      this.groups = groups;
+      this.groups = Groups.getUserToGroupsMappingService(
+          ((CapacityScheduler)scheduler).getConf());
       this.overrideWithQueueMappings = overrideWithQueueMappings;
       return true;
     }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacityScheduler.java

@@ -61,6 +61,7 @@ import org.apache.hadoop.fs.CommonConfigurationKeys;
 import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem;
 import org.apache.hadoop.net.NetworkTopology;
 import org.apache.hadoop.security.Credentials;
+import org.apache.hadoop.security.Groups;
 import org.apache.hadoop.security.ShellBasedUnixGroupsMapping;
 import org.apache.hadoop.security.TestGroupsCaching;
 import org.apache.hadoop.security.UserGroupInformation;
@@ -5329,6 +5330,8 @@ public class TestCapacityScheduler extends CapacitySchedulerTestBase {
         TestGroupsCaching.FakeunPrivilegedGroupMapping.class, ShellBasedUnixGroupsMapping.class);
     config.set(CommonConfigurationKeys.HADOOP_USER_GROUP_STATIC_OVERRIDES,
         "a1" +"=" + "agroup" + "");
+    Groups.getUserToGroupsMappingServiceWithLoadedConfiguration(config);
+
     config.set(CapacitySchedulerConfiguration.QUEUE_MAPPING,
         "g:agroup:%user");
 

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/TestCapacitySchedulerAutoCreatedQueueBase.java

@@ -20,6 +20,7 @@ package org.apache.hadoop.yarn.server.resourcemanager.scheduler.capacity;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import org.apache.commons.lang3.RandomUtils;
+import org.apache.hadoop.security.Groups;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.apache.hadoop.conf.Configuration;
@@ -305,6 +306,7 @@ public class TestCapacitySchedulerAutoCreatedQueueBase {
         TestGroupsCaching.FakeunPrivilegedGroupMapping.class, ShellBasedUnixGroupsMapping.class);
     conf.set(CommonConfigurationKeys.HADOOP_USER_GROUP_STATIC_OVERRIDES,
         TEST_GROUPUSER +"=" + TEST_GROUP + ";invalid_user=invalid_group");
+    Groups.getUserToGroupsMappingServiceWithLoadedConfiguration(conf);
 
     UserGroupMappingPlacementRule.QueueMapping userQueueMapping =
         new UserGroupMappingPlacementRule.QueueMapping(

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/TestQueuePlacementPolicy.java

@@ -29,6 +29,7 @@ import javax.xml.parsers.DocumentBuilderFactory;
 import org.apache.commons.io.IOUtils;
 import org.apache.hadoop.fs.CommonConfigurationKeys;
 import org.apache.hadoop.security.GroupMappingServiceProvider;
+import org.apache.hadoop.security.Groups;
 import org.apache.hadoop.yarn.api.records.ApplicationId;
 import org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext;
 import org.apache.hadoop.yarn.api.records.ContainerLaunchContext;
@@ -560,8 +561,10 @@ public class TestQueuePlacementPolicy {
     sb.append("  </rule>");
     sb.append("</queuePlacementPolicy>");
 
+    // change the group resolution
     CONF.setClass(CommonConfigurationKeys.HADOOP_SECURITY_GROUP_MAPPING,
         PeriodGroupsMapping.class, GroupMappingServiceProvider.class);
+    Groups.getUserToGroupsMappingServiceWithLoadedConfiguration(CONF);
     // User queue would be created under primary group queue, and the period
     // in the group name should be converted into _dot_
     createPolicy(sb.toString());
@@ -569,8 +572,10 @@ public class TestQueuePlacementPolicy {
     context = placementManager.placeApplication(asc, "user1");
     assertEquals("root.user1_dot_group.user1", context.getQueue());
 
+    // undo the group resolution change
     CONF.setClass(CommonConfigurationKeys.HADOOP_SECURITY_GROUP_MAPPING,
         SimpleGroupsMapping.class, GroupMappingServiceProvider.class);
+    Groups.getUserToGroupsMappingServiceWithLoadedConfiguration(CONF);
   }
 
   @Test