HBASE-19563 A few hbase-procedure classes missing @InterfaceAudience annotation

hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/LockAndQueue.java

@@ -18,6 +18,8 @@
 
 package org.apache.hadoop.hbase.procedure2;
 
+import org.apache.yetus.audience.InterfaceAudience;
+
 /**
  * Locking for mutual exclusion between procedures. Used only by procedure framework internally.
  * {@link LockAndQueue} has two purposes:
@@ -42,6 +44,7 @@ package org.apache.hadoop.hbase.procedure2;
  * <br>
  * We do not use ReentrantReadWriteLock directly because of its high memory overhead.
  */
+@InterfaceAudience.Private
 public class LockAndQueue extends ProcedureDeque implements LockStatus {
   private Procedure<?> exclusiveLockOwnerProcedure = null;
   private int sharedLock = 0;

hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/LockStatus.java

@@ -18,18 +18,28 @@
 
 package org.apache.hadoop.hbase.procedure2;
 
+import org.apache.yetus.audience.InterfaceAudience;
+
 /**
  * Interface to get status of a Lock without getting access to acquire/release lock.
  * Currently used in MasterProcedureScheduler where we want to give Queues access to lock's
  * status for scheduling purposes, but not the ability to acquire/release it.
  */
+@InterfaceAudience.Private
 public interface LockStatus {
   boolean isLocked();
+
   boolean hasExclusiveLock();
+
   boolean isLockOwner(long procId);
+
   boolean hasParentLock(final Procedure proc);
+
   boolean hasLockAccess(final Procedure proc);
+
   Procedure<?> getExclusiveLockOwnerProcedure();
+
   long getExclusiveLockProcIdOwner();
+
   int getSharedLockCount();
 }

hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/ProcedureMetrics.java

@@ -20,6 +20,7 @@ package org.apache.hadoop.hbase.procedure2;
 
 import org.apache.hadoop.hbase.metrics.Counter;
 import org.apache.hadoop.hbase.metrics.Histogram;
+import org.apache.yetus.audience.InterfaceAudience;
 
 /**
  * With this interface, the procedure framework provides means to collect following set of metrics
@@ -32,6 +33,7 @@ import org.apache.hadoop.hbase.metrics.Histogram;
  *
  *  Please implement this interface to return appropriate metrics.
  */
+@InterfaceAudience.Private
 public interface ProcedureMetrics {
   /**
    * @return Total number of instances submitted for a type of a procedure

hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/ProcedureStateSerializer.java

@@ -19,8 +19,11 @@ package org.apache.hadoop.hbase.procedure2;
 
 import java.io.IOException;
 
+import org.apache.yetus.audience.InterfaceAudience;
+
 import org.apache.hadoop.hbase.shaded.com.google.protobuf.Message;
 
+@InterfaceAudience.Private
 public interface ProcedureStateSerializer {
   void serialize(Message message) throws IOException;
 

hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/store/NoopProcedureStore.java

@@ -21,10 +21,12 @@ package org.apache.hadoop.hbase.procedure2.store;
 import java.io.IOException;
 
 import org.apache.hadoop.hbase.procedure2.Procedure;
+import org.apache.yetus.audience.InterfaceAudience;
 
 /**
  * An In-Memory store that does not keep track of the procedures inserted.
  */
+@InterfaceAudience.Private
 public class NoopProcedureStore extends ProcedureStoreBase {
   private int numThreads;
 

hbase-procedure/src/main/java/org/apache/hadoop/hbase/procedure2/store/ProcedureStoreBase.java

@@ -21,9 +21,12 @@ package org.apache.hadoop.hbase.procedure2.store;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.concurrent.atomic.AtomicBoolean;
 
+import org.apache.yetus.audience.InterfaceAudience;
+
 /**
  * Base class for {@link ProcedureStore}s.
  */
+@InterfaceAudience.Private
 public abstract class ProcedureStoreBase implements ProcedureStore {
   private final CopyOnWriteArrayList<ProcedureStoreListener> listeners = new CopyOnWriteArrayList<>();