temp initialize

src/crane/crane_master.go

@@ -297,7 +297,7 @@ func startNewJob() {
 			}
 		}
 	}
-	tempData = make([]interface{})
+	tempData = make([]interface{}, 0)
 	//wg.Wait()
 	// start spout goroutine
 	go runSpout()