diff --git a/dledger/src/main/java/io/openmessaging/storage/dledger/DLedgerEntryPusher.java b/dledger/src/main/java/io/openmessaging/storage/dledger/DLedgerEntryPusher.java
index 021ac2a6..ca1f96e5 100644
--- a/dledger/src/main/java/io/openmessaging/storage/dledger/DLedgerEntryPusher.java
+++ b/dledger/src/main/java/io/openmessaging/storage/dledger/DLedgerEntryPusher.java
@@ -222,7 +222,7 @@ private void checkResponseFuturesElapsed(final long endIndex) {
 
     private void updateCommittedIndex(final long term, final long committedIndex) {
         dLedgerStore.updateCommittedIndex(term, committedIndex);
-        this.fsmCaller.ifPresent(caller -> caller.onCommitted(committedIndex));
+        this.fsmCaller.ifPresent(caller -> caller.onCommitted(dLedgerStore.getCommittedIndex()));
     }
 
     /**
@@ -874,7 +874,7 @@ private void handleDoAppend(long writeIndex, PushEntryRequest request,
                 future.complete(buildResponse(request, DLedgerResponseCode.SUCCESS.getCode()));
                 updateCommittedIndex(request.getTerm(), request.getCommitIndex());
             } catch (Throwable t) {
-                logger.error("[HandleDoWrite] writeIndex={}", writeIndex, t);
+                logger.error("[HandleDoAppend] writeIndex={}", writeIndex, t);
                 future.complete(buildResponse(request, DLedgerResponseCode.INCONSISTENT_STATE.getCode()));
             }
         }
diff --git a/dledger/src/main/java/io/openmessaging/storage/dledger/statemachine/StateMachineCaller.java b/dledger/src/main/java/io/openmessaging/storage/dledger/statemachine/StateMachineCaller.java
index 3f8ab7f6..78bb59ae 100644
--- a/dledger/src/main/java/io/openmessaging/storage/dledger/statemachine/StateMachineCaller.java
+++ b/dledger/src/main/java/io/openmessaging/storage/dledger/statemachine/StateMachineCaller.java
@@ -114,6 +114,7 @@ public StateMachine getStateMachine() {
     }
 
     public boolean onCommitted(final long committedIndex) {
+        if (committedIndex <= this.lastAppliedIndex.get()) return false;
         final ApplyTask task = new ApplyTask();
         task.type = TaskType.COMMITTED;
         task.committedIndex = committedIndex;
diff --git a/dledger/src/main/java/io/openmessaging/storage/dledger/store/file/DLedgerMmapFileStore.java b/dledger/src/main/java/io/openmessaging/storage/dledger/store/file/DLedgerMmapFileStore.java
index c9a08366..d3969a0a 100644
--- a/dledger/src/main/java/io/openmessaging/storage/dledger/store/file/DLedgerMmapFileStore.java
+++ b/dledger/src/main/java/io/openmessaging/storage/dledger/store/file/DLedgerMmapFileStore.java
@@ -609,7 +609,7 @@ public DLedgerEntry get(Long index) {
         }
     }
 
-    public Pair<Long, Integer> getEntryPosAndSize(Long index) {
+    private Pair<Long, Integer> getEntryPosAndSize(Long index) {
         indexCheck(index);
         SelectMmapBufferResult indexSbr = null;
         try {
@@ -625,7 +625,7 @@ public Pair<Long, Integer> getEntryPosAndSize(Long index) {
         }
     }
 
-    public void indexCheck(Long index) {
+    private void indexCheck(Long index) {
         PreConditions.check(index >= 0, DLedgerResponseCode.INDEX_OUT_OF_RANGE, "%d should gt 0", index);
         PreConditions.check(index > ledgerBeforeBeginIndex, DLedgerResponseCode.INDEX_LESS_THAN_LOCAL_BEGIN, "%d should be gt %d, beforeBeginIndex may be revised", index, ledgerBeforeBeginIndex);
         PreConditions.check(index <= ledgerEndIndex, DLedgerResponseCode.INDEX_OUT_OF_RANGE, "%d should between (%d-%d]", index, ledgerBeforeBeginIndex, ledgerEndIndex);