diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionInfo.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionInfo.java
index b6bdd0103de..55a91db9397 100644
--- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionInfo.java
+++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/RegionInfo.java
@@ -35,6 +35,7 @@ import org.apache.hadoop.hbase.util.HashKey;
 import org.apache.hadoop.hbase.util.JenkinsHash;
 import org.apache.hadoop.hbase.util.MD5Hash;
 import org.apache.hadoop.io.DataInputBuffer;
+import org.apache.hadoop.io.IOUtils;
 import org.apache.yetus.audience.InterfaceAudience;
 import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
 import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;
@@ -752,8 +753,7 @@ public interface RegionInfo extends Comparable<RegionInfo> {
     }
 
     //assumption: if Writable serialization, it should be longer than pblen.
-    int read = in.read(pbuf);
-    if (read != pblen) throw new IOException("read=" + read + ", wanted=" + pblen);
+    IOUtils.readFully(in, pbuf, 0, pblen);
     if (ProtobufUtil.isPBMagicPrefix(pbuf)) {
       return ProtobufUtil.toRegionInfo(HBaseProtos.RegionInfo.parseDelimitedFrom(in));
     } else {