diff --git a/weed/filer2/filechunks.go b/weed/filer2/filechunks.go
index 711488df1..fe7841fa7 100644
--- a/weed/filer2/filechunks.go
+++ b/weed/filer2/filechunks.go
@@ -75,7 +75,7 @@ type ChunkView struct {
 	isGzipped   bool
 }
 
-func ViewFromChunks(chunks []*filer_pb.FileChunk, offset int64, size int) (views []*ChunkView) {
+func ViewFromChunks(chunks []*filer_pb.FileChunk, offset int64, size int64) (views []*ChunkView) {
 
 	visibles := NonOverlappingVisibleIntervals(chunks)
 
@@ -83,9 +83,9 @@ func ViewFromChunks(chunks []*filer_pb.FileChunk, offset int64, size int) (views
 
 }
 
-func ViewFromVisibleIntervals(visibles []VisibleInterval, offset int64, size int) (views []*ChunkView) {
+func ViewFromVisibleIntervals(visibles []VisibleInterval, offset int64, size int64) (views []*ChunkView) {
 
-	stop := offset + int64(size)
+	stop := offset + size
 
 	for _, chunk := range visibles {
 
diff --git a/weed/filer2/filechunks_test.go b/weed/filer2/filechunks_test.go
index bb4a6c74d..7b1133b85 100644
--- a/weed/filer2/filechunks_test.go
+++ b/weed/filer2/filechunks_test.go
@@ -218,7 +218,7 @@ func TestChunksReading(t *testing.T) {
 	testcases := []struct {
 		Chunks   []*filer_pb.FileChunk
 		Offset   int64
-		Size     int
+		Size     int64
 		Expected []*ChunkView
 	}{
 		// case 0: normal
diff --git a/weed/filer2/stream.go b/weed/filer2/stream.go
index 0f7c3c176..8819070ff 100644
--- a/weed/filer2/stream.go
+++ b/weed/filer2/stream.go
@@ -14,7 +14,7 @@ import (
 	"github.com/chrislusf/seaweedfs/weed/wdclient"
 )
 
-func StreamContent(masterClient *wdclient.MasterClient, w io.Writer, chunks []*filer_pb.FileChunk, offset int64, size int) error {
+func StreamContent(masterClient *wdclient.MasterClient, w io.Writer, chunks []*filer_pb.FileChunk, offset int64, size int64) error {
 
 	chunkViews := ViewFromChunks(chunks, offset, size)
 
@@ -61,7 +61,7 @@ var _ = io.ReadSeeker(&ChunkStreamReader{})
 
 func NewChunkStreamReaderFromFiler(masterClient *wdclient.MasterClient, chunks []*filer_pb.FileChunk) *ChunkStreamReader {
 
-	chunkViews := ViewFromChunks(chunks, 0, math.MaxInt32)
+	chunkViews := ViewFromChunks(chunks, 0, math.MaxInt64)
 
 	return &ChunkStreamReader{
 		chunkViews: chunkViews,
diff --git a/weed/filesys/filehandle.go b/weed/filesys/filehandle.go
index bfdafd580..1dfaf5944 100644
--- a/weed/filesys/filehandle.go
+++ b/weed/filesys/filehandle.go
@@ -90,7 +90,7 @@ func (fh *FileHandle) readFromChunks(buff []byte, offset int64) (int64, error) {
 		fh.f.reader = nil
 	}
 	if fh.f.reader == nil {
-		chunkViews := filer2.ViewFromVisibleIntervals(fh.f.entryViewCache, 0, math.MaxInt32)
+		chunkViews := filer2.ViewFromVisibleIntervals(fh.f.entryViewCache, 0, math.MaxInt64)
 		fh.f.reader = filer2.NewChunkStreamReaderFromClient(fh.f.wfs, chunkViews)
 	}
 
diff --git a/weed/replication/sink/azuresink/azure_sink.go b/weed/replication/sink/azuresink/azure_sink.go
index 89e04922f..d75dbe9af 100644
--- a/weed/replication/sink/azuresink/azure_sink.go
+++ b/weed/replication/sink/azuresink/azure_sink.go
@@ -96,7 +96,7 @@ func (g *AzureSink) CreateEntry(key string, entry *filer_pb.Entry) error {
 	}
 
 	totalSize := filer2.TotalSize(entry.Chunks)
-	chunkViews := filer2.ViewFromChunks(entry.Chunks, 0, int(totalSize))
+	chunkViews := filer2.ViewFromChunks(entry.Chunks, 0, int64(totalSize))
 
 	// Create a URL that references a to-be-created blob in your
 	// Azure Storage account's container.
diff --git a/weed/replication/sink/b2sink/b2_sink.go b/weed/replication/sink/b2sink/b2_sink.go
index df0653f73..b5d410a75 100644
--- a/weed/replication/sink/b2sink/b2_sink.go
+++ b/weed/replication/sink/b2sink/b2_sink.go
@@ -85,7 +85,7 @@ func (g *B2Sink) CreateEntry(key string, entry *filer_pb.Entry) error {
 	}
 
 	totalSize := filer2.TotalSize(entry.Chunks)
-	chunkViews := filer2.ViewFromChunks(entry.Chunks, 0, int(totalSize))
+	chunkViews := filer2.ViewFromChunks(entry.Chunks, 0, int64(totalSize))
 
 	bucket, err := g.client.Bucket(context.Background(), g.bucket)
 	if err != nil {
diff --git a/weed/replication/sink/gcssink/gcs_sink.go b/weed/replication/sink/gcssink/gcs_sink.go
index 694399274..b1a8d7753 100644
--- a/weed/replication/sink/gcssink/gcs_sink.go
+++ b/weed/replication/sink/gcssink/gcs_sink.go
@@ -90,7 +90,7 @@ func (g *GcsSink) CreateEntry(key string, entry *filer_pb.Entry) error {
 	}
 
 	totalSize := filer2.TotalSize(entry.Chunks)
-	chunkViews := filer2.ViewFromChunks(entry.Chunks, 0, int(totalSize))
+	chunkViews := filer2.ViewFromChunks(entry.Chunks, 0, int64(totalSize))
 
 	wc := g.client.Bucket(g.bucket).Object(key).NewWriter(context.Background())
 
diff --git a/weed/replication/sink/s3sink/s3_sink.go b/weed/replication/sink/s3sink/s3_sink.go
index e0aee5ada..5dbc3fdb7 100644
--- a/weed/replication/sink/s3sink/s3_sink.go
+++ b/weed/replication/sink/s3sink/s3_sink.go
@@ -103,7 +103,7 @@ func (s3sink *S3Sink) CreateEntry(key string, entry *filer_pb.Entry) error {
 	}
 
 	totalSize := filer2.TotalSize(entry.Chunks)
-	chunkViews := filer2.ViewFromChunks(entry.Chunks, 0, int(totalSize))
+	chunkViews := filer2.ViewFromChunks(entry.Chunks, 0, int64(totalSize))
 
 	parts := make([]*s3.CompletedPart, len(chunkViews))
 
diff --git a/weed/server/filer_server_handlers_read.go b/weed/server/filer_server_handlers_read.go
index 14414de65..310fbcec4 100644
--- a/weed/server/filer_server_handlers_read.go
+++ b/weed/server/filer_server_handlers_read.go
@@ -102,7 +102,7 @@ func (fs *FilerServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request,
 	}
 
 	processRangeRequest(r, w, totalSize, mimeType, func(writer io.Writer, offset int64, size int64) error {
-		return filer2.StreamContent(fs.filer.MasterClient, writer, entry.Chunks, offset, int(size))
+		return filer2.StreamContent(fs.filer.MasterClient, writer, entry.Chunks, offset, size)
 	})
 
 }
diff --git a/weed/server/webdav_server.go b/weed/server/webdav_server.go
index 5a35e05d8..a7232d8a8 100644
--- a/weed/server/webdav_server.go
+++ b/weed/server/webdav_server.go
@@ -499,7 +499,7 @@ func (f *WebDavFile) Read(p []byte) (readSize int, err error) {
 		f.reader = nil
 	}
 	if f.reader == nil {
-		chunkViews := filer2.ViewFromVisibleIntervals(f.entryViewCache, 0, math.MaxInt32)
+		chunkViews := filer2.ViewFromVisibleIntervals(f.entryViewCache, 0, math.MaxInt64)
 		f.reader = filer2.NewChunkStreamReaderFromClient(f.fs, chunkViews)
 	}
 
diff --git a/weed/shell/command_fs_cat.go b/weed/shell/command_fs_cat.go
index 3db487979..7d2ac8989 100644
--- a/weed/shell/command_fs_cat.go
+++ b/weed/shell/command_fs_cat.go
@@ -54,7 +54,7 @@ func (c *commandFsCat) Do(args []string, commandEnv *CommandEnv, writer io.Write
 			return err
 		}
 
-		return filer2.StreamContent(commandEnv.MasterClient, writer, respLookupEntry.Entry.Chunks, 0, math.MaxInt32)
+		return filer2.StreamContent(commandEnv.MasterClient, writer, respLookupEntry.Entry.Chunks, 0, math.MaxInt64)
 
 	})