From 1645d3c18534324de795643974299de0d512d3f1 Mon Sep 17 00:00:00 2001
From: Chris Lu <chris.lu@gmail.com>
Date: Tue, 19 Nov 2013 02:12:56 -0800
Subject: [PATCH] avoid nil cases when error

---
 go/operation/submit.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/go/operation/submit.go b/go/operation/submit.go
index 3c7d233ad..154e50719 100644
--- a/go/operation/submit.go
+++ b/go/operation/submit.go
@@ -132,7 +132,10 @@ func upload_one_chunk(filename string, reader io.Reader, master, replication str
 	fileUrl, fid := "http://"+ret.PublicUrl+"/"+ret.Fid, ret.Fid
 	glog.V(4).Info("Uploading part ", filename, " to ", fileUrl, "...")
 	uploadResult, uploadError := Upload(fileUrl, filename, reader, false, "application/octet-stream")
-	return fid, uploadResult.Size, uploadError
+	if uploadError != nil {
+		return fid, 0, uploadError
+	}
+	return fid, uploadResult.Size, nil
 }
 
 func upload_file_id_list(fileUrl, filename string, fids []string) error {