--- sysbench-0.5.0/sysbench/drivers/mysql/drv_mysql.c	2006-10-10 12:22:51.000000000 -0700
+++ venu-patch/sysbench/drivers/mysql/drv_mysql.c	2007-12-22 02:30:36.492383000 -0800
@@ -65,6 +65,7 @@
    SB_ARG_TYPE_STRING, "auto"},
   {"mysql-ssl", "use SSL connections, if available in the client library", SB_ARG_TYPE_FLAG, "off"},
   {"myisam-max-rows", "max-rows parameter for MyISAM tables", SB_ARG_TYPE_INT, "1000000"},
+  {"mysql-ignore-duplicates", "Ignore the duplicate key errors", SB_ARG_TYPE_FLAG, "off"},
   
   {NULL, NULL, SB_ARG_TYPE_NULL, NULL}
 };
@@ -87,6 +88,7 @@
   unsigned int       myisam_max_rows;
   mysql_drv_trx_t    engine_trx;
   unsigned int       use_ssl;
+  unsigned int       ignore_duplicates;
 } mysql_drv_args_t;
 
 #ifdef HAVE_PS
@@ -232,6 +234,10 @@
   args.db = sb_get_value_string("mysql-db");
   args.myisam_max_rows = sb_get_value_int("myisam-max-rows");
   args.use_ssl = sb_get_value_flag("mysql-ssl");
+  args.ignore_duplicates = sb_get_value_flag("mysql-ignore-duplicates");
+	     
+  if (args.ignore_duplicates)
+  	log_text(LOG_ALERT, "WARNING: Duplicate Key errors will be ignored");
   
   use_ps = 0;
 #ifdef HAVE_PS
@@ -640,6 +646,12 @@
       if (rc == ER_LOCK_DEADLOCK || rc == ER_LOCK_WAIT_TIMEOUT || 
           rc == ER_CHECKREAD)
         return SB_DB_ERROR_DEADLOCK;
+	  if (args.ignore_duplicates && rc == ER_DUP_ENTRY) {
+	     log_text(LOG_ALERT, "WARNING: Ignoring the duplicate error on execute mysql_stmt_execute(): Err%d %s",
+	             mysql_errno(con->ptr),
+	             mysql_error(con->ptr));
+	     return SB_DB_ERROR_NONE;
+	  }
       log_text(LOG_ALERT, "failed to execute mysql_stmt_execute(): Err%d %s",
                mysql_errno(con->ptr),
                mysql_error(con->ptr));