Revert "YARN-11765. Refactor: Move Clock Class from hadoop-mapreduce-project to hadoop-common-project for Reusability (apache#7352) Contributed by Jiandan Yang."

This reverts commit 49d4c73.

Author: pan3793

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

@@ -30,7 +30,7 @@
 import org.apache.hadoop.security.Credentials;
 import org.apache.hadoop.security.token.Token;
 import org.apache.hadoop.yarn.event.EventHandler;
-import org.apache.hadoop.util.Clock;
+import org.apache.hadoop.yarn.util.Clock;
 
 @SuppressWarnings("rawtypes")
 public class MapTaskAttemptImpl extends TaskAttemptImpl {

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

@@ -29,7 +29,7 @@
 import org.apache.hadoop.security.Credentials;
 import org.apache.hadoop.security.token.Token;
 import org.apache.hadoop.yarn.event.EventHandler;
-import org.apache.hadoop.util.Clock;
+import org.apache.hadoop.yarn.util.Clock;
 
 @SuppressWarnings("rawtypes")
 public class ReduceTaskAttemptImpl extends TaskAttemptImpl {

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

@@ -29,7 +29,7 @@
 import org.apache.hadoop.yarn.event.Event;
 import org.apache.hadoop.yarn.event.EventHandler;
 import org.apache.hadoop.yarn.security.client.ClientToAMTokenSecretManager;
-import org.apache.hadoop.util.Clock;
+import org.apache.hadoop.yarn.util.Clock;
 
 
 /**

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapred/MapTaskAttemptImpl.java

@@ -150,8 +150,8 @@
 import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
 import org.apache.hadoop.yarn.security.AMRMTokenIdentifier;
 import org.apache.hadoop.yarn.security.client.ClientToAMTokenSecretManager;
-import org.apache.hadoop.util.Clock;
-import org.apache.hadoop.util.SystemClock;
+import org.apache.hadoop.yarn.util.Clock;
+import org.apache.hadoop.yarn.util.SystemClock;
 
 import org.apache.hadoop.classification.VisibleForTesting;
 import org.slf4j.Logger;

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapred/ReduceTaskAttemptImpl.java

@@ -25,7 +25,7 @@
 import org.apache.hadoop.mapreduce.v2.app.job.event.TaskAttemptEventType;
 import org.apache.hadoop.yarn.event.EventHandler;
 import org.apache.hadoop.yarn.util.AbstractLivelinessMonitor;
-import org.apache.hadoop.util.SystemClock;
+import org.apache.hadoop.yarn.util.SystemClock;
 
 /**
  * This class generates TA_TIMED_OUT if the task attempt stays in FINISHING

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/AppContext.java

@@ -34,7 +34,7 @@
 import org.apache.hadoop.mapreduce.v2.app.job.event.TaskAttemptEventType;
 import org.apache.hadoop.service.AbstractService;
 import org.apache.hadoop.yarn.event.EventHandler;
-import org.apache.hadoop.util.Clock;
+import org.apache.hadoop.yarn.util.Clock;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 

hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/MRAppMaster.java

@@ -128,7 +128,7 @@
 import org.apache.hadoop.yarn.state.SingleArcTransition;
 import org.apache.hadoop.yarn.state.StateMachine;
 import org.apache.hadoop.yarn.state.StateMachineFactory;
-import org.apache.hadoop.util.Clock;
+import org.apache.hadoop.yarn.util.Clock;
 
 import org.apache.hadoop.classification.VisibleForTesting;
 import org.apache.hadoop.thirdparty.com.google.common.util.concurrent.ThreadFactoryBuilder;