1 files changed, 27 insertions, 2 deletions
diff --git a/sql/handler.cc b/sql/handler.cc
index 9e43d5aba93..4f5c613a6a4 100644
--- a/sql/handler.cc
+++ b/sql/handler.cc
@@ -4287,7 +4287,19 @@ int handler::read_range_first(const key_range *start_key,
 		? HA_ERR_END_OF_FILE
 		: result);
 
-  DBUG_RETURN (compare_key(end_range) <= 0 ? 0 : HA_ERR_END_OF_FILE);
+  if (compare_key(end_range) <= 0)
+  {
+    DBUG_RETURN(0);
+  }
+  else
+  {
+    /*
+      The last read row does not fall in the range. So request
+      storage engine to release row lock if possible.
+    */
+    unlock_row();
+    DBUG_RETURN(HA_ERR_END_OF_FILE);
+  }
 }
 
 
@@ -4319,7 +4331,20 @@ int handler::read_range_next()
   result= index_next(table->record[0]);
   if (result)
     DBUG_RETURN(result);
-  DBUG_RETURN(compare_key(end_range) <= 0 ? 0 : HA_ERR_END_OF_FILE);
+
+  if (compare_key(end_range) <= 0)
+  {
+    DBUG_RETURN(0);
+  }
+  else
+  {
+    /*
+      The last read row does not fall in the range. So request
+      storage engine to release row lock if possible.
+    */
+    unlock_row();
+    DBUG_RETURN(HA_ERR_END_OF_FILE);
+  }
 }