diff --git a/asterixdb/asterix-common/src/main/java/org/apache/asterix/common/api/IDatasetLifecycleManager.java b/asterixdb/asterix-common/src/main/java/org/apache/asterix/common/api/IDatasetLifecycleManager.java
index 954c209..10eddb1 100644
--- a/asterixdb/asterix-common/src/main/java/org/apache/asterix/common/api/IDatasetLifecycleManager.java
+++ b/asterixdb/asterix-common/src/main/java/org/apache/asterix/common/api/IDatasetLifecycleManager.java
@@ -135,4 +135,12 @@
      * @throws HyracksDataException
      */
     void flushDataset(IReplicationStrategy replicationStrategy) throws HyracksDataException;
+
+    /**
+     * Waits for all ongoing IO operations on all open datasets that are matching {@code replicationStrategy}.
+     *
+     * @param replicationStrategy
+     * @throws HyracksDataException
+     */
+    void waitForIO(IReplicationStrategy replicationStrategy) throws HyracksDataException;
 }
diff --git a/asterixdb/asterix-common/src/main/java/org/apache/asterix/common/context/DatasetLifecycleManager.java b/asterixdb/asterix-common/src/main/java/org/apache/asterix/common/context/DatasetLifecycleManager.java
index 5cde36c..d396d9b 100644
--- a/asterixdb/asterix-common/src/main/java/org/apache/asterix/common/context/DatasetLifecycleManager.java
+++ b/asterixdb/asterix-common/src/main/java/org/apache/asterix/common/context/DatasetLifecycleManager.java
@@ -594,6 +594,15 @@
         }
     }
 
+    @Override
+    public void waitForIO(IReplicationStrategy replicationStrategy) throws HyracksDataException {
+        for (DatasetResource dsr : datasets.values()) {
+            if (dsr.isOpen() && replicationStrategy.isMatch(dsr.getDatasetID())) {
+                dsr.getDatasetInfo().waitForIO();
+            }
+        }
+    }
+
     private void closeIndex(IndexInfo indexInfo) throws HyracksDataException {
         if (indexInfo.isOpen()) {
             ILSMOperationTracker opTracker = indexInfo.getIndex().getOperationTracker();
diff --git a/asterixdb/asterix-replication/src/main/java/org/apache/asterix/replication/sync/ReplicaSynchronizer.java b/asterixdb/asterix-replication/src/main/java/org/apache/asterix/replication/sync/ReplicaSynchronizer.java
index 09f1205..0f0b5bd 100644
--- a/asterixdb/asterix-replication/src/main/java/org/apache/asterix/replication/sync/ReplicaSynchronizer.java
+++ b/asterixdb/asterix-replication/src/main/java/org/apache/asterix/replication/sync/ReplicaSynchronizer.java
@@ -53,10 +53,12 @@
 
     private void syncFiles() throws IOException {
         final ReplicaFilesSynchronizer fileSync = new ReplicaFilesSynchronizer(appCtx, replica);
+        waitForReplicatedDatasetsIO();
         fileSync.sync();
         // flush replicated dataset to generate disk component for any remaining in-memory components
         final IReplicationStrategy replStrategy = appCtx.getReplicationManager().getReplicationStrategy();
         appCtx.getDatasetLifecycleManager().flushDataset(replStrategy);
+        waitForReplicatedDatasetsIO();
         // sync any newly generated files
         fileSync.sync();
     }
@@ -75,4 +77,10 @@
                 (PersistentLocalResourceRepository) appCtx.getLocalResourceRepository();
         return localResourceRepository.getReplicatedIndexesMaxComponentId(partition, replStrategy);
     }
+
+    private void waitForReplicatedDatasetsIO() throws HyracksDataException {
+        // wait for IO operations to ensure replicated datasets files won't change during replica sync
+        final IReplicationStrategy replStrategy = appCtx.getReplicationManager().getReplicationStrategy();
+        appCtx.getDatasetLifecycleManager().waitForIO(replStrategy);
+    }
 }
diff --git a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/FileReference.java b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/FileReference.java
index 8b93d07..20e9ff6 100644
--- a/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/FileReference.java
+++ b/hyracks-fullstack/hyracks/hyracks-api/src/main/java/org/apache/hyracks/api/io/FileReference.java
@@ -58,12 +58,12 @@
         if (!(o instanceof FileReference)) {
             return false;
         }
-        return path.equals(((FileReference) o).path) && dev.equals(((FileReference) o).dev);
+        return file.getAbsolutePath().equals(((FileReference) o).getAbsolutePath());
     }
 
     @Override
     public int hashCode() {
-        return path.hashCode();
+        return file.getAbsolutePath().hashCode();
     }
 
     /**