diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/BaseMasterAndRegionObserver.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/BaseMasterAndRegionObserver.java
index 47480564454..65398c20d8b 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/BaseMasterAndRegionObserver.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/BaseMasterAndRegionObserver.java
@@ -36,6 +36,7 @@ import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.classification.InterfaceStability;
+import org.apache.hadoop.hbase.client.Admin;
 import org.apache.hadoop.hbase.master.RegionPlan;
 import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
 import org.apache.hadoop.hbase.procedure2.ProcedureExecutor;
@@ -44,7 +45,7 @@ import org.apache.hadoop.hbase.protobuf.generated.QuotaProtos.Quotas;
 
 @InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
 @InterfaceStability.Evolving
-public abstract class BaseMasterAndRegionObserver extends BaseRegionObserver
+public class BaseMasterAndRegionObserver extends BaseRegionObserver
     implements MasterObserver {
   @Override
   public void preCreateTable(ObserverContext<MasterCoprocessorEnvironment> ctx,
@@ -446,6 +447,22 @@ public abstract class BaseMasterAndRegionObserver extends BaseRegionObserver
       throws IOException {
   }
 
+  @Override
+  public boolean preSetSplitOrMergeEnabled(ObserverContext<MasterCoprocessorEnvironment> ctx,
+                                           boolean newValue,
+                                           Admin.MasterSwitchType switchType)
+      throws IOException {
+    return false;
+  }
+
+  @Override
+  public void postSetSplitOrMergeEnabled(ObserverContext<MasterCoprocessorEnvironment> ctx,
+                                         boolean newValue,
+                                         Admin.MasterSwitchType switchType)
+      throws IOException {
+
+  }
+
   @Override
   public boolean preBalanceSwitch(ObserverContext<MasterCoprocessorEnvironment> ctx,
       boolean b) throws IOException {
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/BaseRegionObserver.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/BaseRegionObserver.java
index 3286f53e768..da7252bef65 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/BaseRegionObserver.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/BaseRegionObserver.java
@@ -71,7 +71,7 @@ import com.google.common.collect.ImmutableList;
  */
 @InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.COPROC)
 @InterfaceStability.Evolving
-public abstract class BaseRegionObserver implements RegionObserver {
+public class BaseRegionObserver implements RegionObserver {
   @Override
   public void start(CoprocessorEnvironment e) throws IOException { }