From 579d3496a93a23a9e570fe92baec4a8205feb013 Mon Sep 17 00:00:00 2001
From: chenlin <1572139390@qq.com>
Date: Sat, 5 Mar 2022 17:50:47 +0800
Subject: [PATCH] fix npe for getLength in class of  EntryImpl

---
 .../main/java/org/apache/bookkeeper/mledger/impl/EntryImpl.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/EntryImpl.java b/managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/EntryImpl.java
index 3050309239899..96bde26f72cf5 100644
--- a/managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/EntryImpl.java
+++ b/managed-ledger/src/main/java/org/apache/bookkeeper/mledger/impl/EntryImpl.java
@@ -129,7 +129,7 @@ public byte[] getDataAndRelease() {
 
     @Override
     public int getLength() {
-        return data.readableBytes();
+        return data != null ? data.readableBytes() : 0;
     }
 
     @Override