diff --git a/src/main/java/io/hops/metadata/hdfs/dal/OngoingSubTreeOpsDataAccess.java b/src/main/java/io/hops/metadata/hdfs/dal/OngoingSubTreeOpsDataAccess.java
index 448a8d1f..5a438c4d 100644
--- a/src/main/java/io/hops/metadata/hdfs/dal/OngoingSubTreeOpsDataAccess.java
+++ b/src/main/java/io/hops/metadata/hdfs/dal/OngoingSubTreeOpsDataAccess.java
@@ -30,6 +30,12 @@ public interface OngoingSubTreeOpsDataAccess<T> extends EntityDataAccess {
 
   Collection<T> allOpsToRecoverAsync() throws StorageException;
 
+  Collection<T> allDeadOperations(long[] aliveNNIDs, long time) throws StorageException;
+
+  Collection<T> allSlowActiveOperations(long[] aliveNNIDs, long time) throws StorageException;
+
+  long getLockTime(long inodeID) throws StorageException;
+
   //only for testing
   Collection<T> allOps() throws StorageException;