diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java
index 11ec958b08a5..8c1a6872ec3f 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/bucket/BucketCache.java
@@ -148,7 +148,7 @@ public class BucketCache implements BlockCache, HeapSize {
   final static int DEFAULT_WRITER_THREADS = 3;
   final static int DEFAULT_WRITER_QUEUE_ITEMS = 64;
 
-  final static long DEFAULT_BACKING_MAP_PERSISTENCE_CHUNK_SIZE = 10000000;
+  final static long DEFAULT_BACKING_MAP_PERSISTENCE_CHUNK_SIZE = 10000;
 
   // Store/read block data
   transient final IOEngine ioEngine;