8 files changed, 42 insertions, 10 deletions
diff --git a/go/compress/delta_binary_pack32.go b/go/compress/delta_binary_pack32.go
new file mode 100644
index 000000000..42ae8d42d
--- /dev/null
+++ b/go/compress/delta_binary_pack32.go
@@ -0,0 +1,32 @@
+package compress
+
+import (
+	"github.com/reducedb/encoding/cursor"
+	"github.com/reducedb/encoding/delta/bp32"
+)
+
+// Compress compresses in[]int32 to out[]int32
+func Compress32(in []int32) (out []int32, err error) {
+	out = make([]int32, len(in)*2)
+	inpos := cursor.New()
+	outpos := cursor.New()
+
+	if err = bp32.New().Compress(in, inpos, len(in), out, outpos); err != nil {
+		return nil, err
+	}
+
+	return out[:outpos.Get()], nil
+}
+
+// Uncompress uncompresses in[]int32 to out[]int32
+func Uncompress32(in []int32, buffer []int32) (out []int32, err error) {
+	out = buffer
+	inpos := cursor.New()
+	outpos := cursor.New()
+
+	if err = bp32.New().Uncompress(in, inpos, len(in), out, outpos); err != nil {
+		return nil, err
+	}
+
+	return out[:outpos.Get()], nil
+}
diff --git a/go/operation/assign_file_id.go b/go/operation/assign_file_id.go
index 31766b053..02a0de976 100644
--- a/go/operation/assign_file_id.go
+++ b/go/operation/assign_file_id.go
@@ -15,13 +15,13 @@ type AssignResult struct {
 	Fid       string `json:"fid,omitempty"`
 	Url       string `json:"url,omitempty"`
 	PublicUrl string `json:"publicUrl,omitempty"`
-	Count     int    `json:"count,omitempty"`
+	Count     uint64 `json:"count,omitempty"`
 	Error     string `json:"error,omitempty"`
 }
 
-func Assign(server string, count int, replication string, collection string, ttl string) (*AssignResult, error) {
+func Assign(server string, count uint64, replication string, collection string, ttl string) (*AssignResult, error) {
 	values := make(url.Values)
-	values.Add("count", strconv.Itoa(count))
+	values.Add("count", strconv.FormatUint(count, 10))
 	if replication != "" {
 		values.Add("replication", replication)
 	}
diff --git a/go/operation/submit.go b/go/operation/submit.go
index 2519d29f8..ca151dfb9 100644
--- a/go/operation/submit.go
+++ b/go/operation/submit.go
@@ -43,7 +43,7 @@ func SubmitFiles(master string, files []FilePart,
 	for index, file := range files {
 		results[index].FileName = file.FileName
 	}
-	ret, err := Assign(master, len(files), replication, collection, ttl)
+	ret, err := Assign(master, uint64(len(files)), replication, collection, ttl)
 	if err != nil {
 		for index, _ := range files {
 			results[index].Error = err.Error()
diff --git a/go/sequence/memory_sequencer.go b/go/sequence/memory_sequencer.go
index c7ee1ae8f..d727dc723 100644
--- a/go/sequence/memory_sequencer.go
+++ b/go/sequence/memory_sequencer.go
@@ -15,7 +15,7 @@ func NewMemorySequencer() (m *MemorySequencer) {
 	return
 }
 
-func (m *MemorySequencer) NextFileId(count int) (uint64, int) {
+func (m *MemorySequencer) NextFileId(count uint64) (uint64, uint64) {
 	m.sequenceLock.Lock()
 	defer m.sequenceLock.Unlock()
 	ret := m.counter
diff --git a/go/sequence/sequence.go b/go/sequence/sequence.go
index 1aa167b6b..fbdc3b8ef 100644
--- a/go/sequence/sequence.go
+++ b/go/sequence/sequence.go
@@ -1,7 +1,7 @@
 package sequence
 
 type Sequencer interface {
-	NextFileId(count int) (uint64, int)
+	NextFileId(count uint64) (uint64, uint64)
 	SetMax(uint64)
 	Peek() uint64
 }
diff --git a/go/topology/topology.go b/go/topology/topology.go
index d96847ed2..f12261081 100644
--- a/go/topology/topology.go
+++ b/go/topology/topology.go
@@ -115,7 +115,7 @@ func (t *Topology) HasWritableVolume(option *VolumeGrowOption) bool {
 	return vl.GetActiveVolumeCount(option) > 0
 }
 
-func (t *Topology) PickForWrite(count int, option *VolumeGrowOption) (string, int, *DataNode, error) {
+func (t *Topology) PickForWrite(count uint64, option *VolumeGrowOption) (string, uint64, *DataNode, error) {
 	vid, count, datanodes, err := t.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl).PickForWrite(count, option)
 	if err != nil || datanodes.Length() == 0 {
 		return "", 0, nil, errors.New("No writable volumes available!")
diff --git a/go/topology/volume_layout.go b/go/topology/volume_layout.go
index e5667e322..14e112141 100644
--- a/go/topology/volume_layout.go
+++ b/go/topology/volume_layout.go
@@ -87,7 +87,7 @@ func (vl *VolumeLayout) ListVolumeServers() (nodes []*DataNode) {
 	return
 }
 
-func (vl *VolumeLayout) PickForWrite(count int, option *VolumeGrowOption) (*storage.VolumeId, int, *VolumeLocationList, error) {
+func (vl *VolumeLayout) PickForWrite(count uint64, option *VolumeGrowOption) (*storage.VolumeId, uint64, *VolumeLocationList, error) {
 	len_writers := len(vl.writables)
 	if len_writers <= 0 {
 		glog.V(0).Infoln("No more writable volumes!")
diff --git a/go/weed/weed_server/master_server_handlers.go b/go/weed/weed_server/master_server_handlers.go
index f8e81152d..097aea503 100644
--- a/go/weed/weed_server/master_server_handlers.go
+++ b/go/weed/weed_server/master_server_handlers.go
@@ -69,8 +69,8 @@ func (ms *MasterServer) volumeLookupHandler(w http.ResponseWriter, r *http.Reque
 
 func (ms *MasterServer) dirAssignHandler(w http.ResponseWriter, r *http.Request) {
 	stats.AssignRequest()
-	requestedCount, e := strconv.Atoi(r.FormValue("count"))
-	if e != nil {
+	requestedCount, e := strconv.ParseUint(r.FormValue("count"), 10, 64)
+	if e != nil || requestedCount == 0 {
 		requestedCount = 1
 	}