3 files changed, 19 insertions, 1 deletions
diff --git a/weed/replication/sink/filersink/fetch_write.go b/weed/replication/sink/filersink/fetch_write.go
index 540e16da4..7b3e22b90 100644
--- a/weed/replication/sink/filersink/fetch_write.go
+++ b/weed/replication/sink/filersink/fetch_write.go
@@ -139,6 +139,11 @@ func (fs *FilerSink) WithFilerClient(streamingMode bool, fn func(filer_pb.Seawee
 	}, fs.grpcAddress, fs.grpcDialOption)
 
 }
+
 func (fs *FilerSink) AdjustedUrl(location *filer_pb.Location) string {
 	return location.Url
 }
+
+func (fs *FilerSink) GetDataCenter() string {
+	return fs.dataCenter
+}
diff --git a/weed/replication/sink/filersink/filer_sink.go b/weed/replication/sink/filersink/filer_sink.go
index 4df69f3fc..9a795d4ec 100644
--- a/weed/replication/sink/filersink/filer_sink.go
+++ b/weed/replication/sink/filersink/filer_sink.go
@@ -52,6 +52,7 @@ func (fs *FilerSink) IsIncremental() bool {
 
 func (fs *FilerSink) Initialize(configuration util.Configuration, prefix string) error {
 	fs.isIncremental = configuration.GetBool(prefix + "is_incremental")
+	fs.dataCenter = configuration.GetString(prefix + "dataCenter")
 	return fs.DoInitialize(
 		"",
 		configuration.GetString(prefix+"grpcAddress"),
diff --git a/weed/replication/source/filer_source.go b/weed/replication/source/filer_source.go
index f6b310355..6c69b735c 100644
--- a/weed/replication/source/filer_source.go
+++ b/weed/replication/source/filer_source.go
@@ -27,9 +27,11 @@ type FilerSource struct {
 	Dir            string
 	address        string
 	proxyByFiler   bool
+	dataCenter     string
 }
 
 func (fs *FilerSource) Initialize(configuration util.Configuration, prefix string) error {
+	fs.dataCenter = configuration.GetString(prefix + "dataCenter")
 	return fs.DoInitialize(
 		"",
 		configuration.GetString(prefix+"grpcAddress"),
@@ -84,7 +86,13 @@ func (fs *FilerSource) LookupFileId(part string) (fileUrls []string, err error)
 
 	if !fs.proxyByFiler {
 		for _, loc := range locations.Locations {
-			fileUrls = append(fileUrls, fmt.Sprintf("http://%s/%s?readDeleted=true", loc.Url, part))
+			fileUrl := fmt.Sprintf("http://%s/%s?readDeleted=true", loc.Url, part)
+			// Prefer same data center
+			if fs.dataCenter != "" && fs.dataCenter == loc.DataCenter {
+				fileUrls = append([]string{fileUrl}, fileUrls...)
+			} else {
+				fileUrls = append(fileUrls, fileUrl)
+			}
 		}
 	} else {
 		fileUrls = append(fileUrls, fmt.Sprintf("http://%s/?proxyChunkId=%s", fs.address, part))
@@ -131,6 +139,10 @@ func (fs *FilerSource) AdjustedUrl(location *filer_pb.Location) string {
 	return location.Url
 }
 
+func (fs *FilerSource) GetDataCenter() string {
+	return fs.dataCenter
+}
+
 func volumeId(fileId string) string {
 	lastCommaIndex := strings.LastIndex(fileId, ",")
 	if lastCommaIndex > 0 {